18720900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:123

約数の個数: 216

約数和(自身を含む): 67162368

約数和(自身を除く): 48441468

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 25, 30, 31, 33, 36, 44, 45, 50, 55, 60, 61, 62, 66, 75, 90, 93, 99, 100, 110, 122, 124, 132, 150, 155, 165, 180, 183, 186, 198, 220, 225, 244, 275, 279, 300, 305, 310, 330, 341, 366, 372, 396, 450, 465, 495, 549, 550, 558, 610, 620, 660, 671, 682, 732, 775, 825, 900, 915, 930, 990, 1023, 1098, 1100, 1116, 1220, 1342, 1364, 1395, 1525, 1550, 1650, 1705, 1830, 1860, 1891, 1980, 2013, 2046, 2196, 2325, 2475, 2684, 2745, 2790, 3050, 3069, 3100, 3300, 3355, 3410, 3660, 3782, 4026, 4092, 4575, 4650, 4950, 5115, 5490, 5580, 5673, 6039, 6100, 6138, 6710, 6820, 6975, 7564, 8052, 8525, 9150, 9300, 9455, 9900, 10065, 10230, 10980, 11346, 12078, 12276, 13420, 13725, 13950, 15345, 16775, 17019, 17050, 18300, 18910, 20130, 20460, 20801, 22692, 24156, 25575, 27450, 27900, 28365, 30195, 30690, 33550, 34038, 34100, 37820, 40260, 41602, 47275, 50325, 51150, 54900, 56730, 60390, 61380, 62403, 67100, 68076, 76725, 83204, 85095, 94550, 100650, 102300, 104005, 113460, 120780, 124806, 141825, 150975, 153450, 170190, 187209, 189100, 201300, 208010, 249612, 283650, 301950, 306900, 312015, 340380, 374418, 416020, 425475, 520025, 567300, 603900, 624030, 748836, 850950, 936045, 1040050, 1248060, 1560075, 1701900, 1872090, 2080100, 3120150, 3744180, 4680225, 6240300, 9360450, 18720900]

約数ペア:

[(1, 18720900), (2, 9360450), (3, 6240300), (4, 4680225), (5, 3744180), (6, 3120150), (9, 2080100), (10, 1872090), (11, 1701900), (12, 1560075), (15, 1248060), (18, 1040050), (20, 936045), (22, 850950), (25, 748836), (30, 624030), (31, 603900), (33, 567300), (36, 520025), (44, 425475), (45, 416020), (50, 374418), (55, 340380), (60, 312015), (61, 306900), (62, 301950), (66, 283650), (75, 249612), (90, 208010), (93, 201300), (99, 189100), (100, 187209), (110, 170190), (122, 153450), (124, 150975), (132, 141825), (150, 124806), (155, 120780), (165, 113460), (180, 104005), (183, 102300), (186, 100650), (198, 94550), (220, 85095), (225, 83204), (244, 76725), (275, 68076), (279, 67100), (300, 62403), (305, 61380), (310, 60390), (330, 56730), (341, 54900), (366, 51150), (372, 50325), (396, 47275), (450, 41602), (465, 40260), (495, 37820), (549, 34100), (550, 34038), (558, 33550), (610, 30690), (620, 30195), (660, 28365), (671, 27900), (682, 27450), (732, 25575), (775, 24156), (825, 22692), (900, 20801), (915, 20460), (930, 20130), (990, 18910), (1023, 18300), (1098, 17050), (1100, 17019), (1116, 16775), (1220, 15345), (1342, 13950), (1364, 13725), (1395, 13420), (1525, 12276), (1550, 12078), (1650, 11346), (1705, 10980), (1830, 10230), (1860, 10065), (1891, 9900), (1980, 9455), (2013, 9300), (2046, 9150), (2196, 8525), (2325, 8052), (2475, 7564), (2684, 6975), (2745, 6820), (2790, 6710), (3050, 6138), (3069, 6100), (3100, 6039), (3300, 5673), (3355, 5580), (3410, 5490), (3660, 5115), (3782, 4950), (4026, 4650), (4092, 4575)]