21273750

素因数分解:

$2^1\times 3^2\times 5^4\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:120

約数の個数: 120

約数和(自身を含む): 60430656

約数和(自身を除く): 39156906

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 31, 45, 50, 61, 62, 75, 90, 93, 122, 125, 150, 155, 183, 186, 225, 250, 279, 305, 310, 366, 375, 450, 465, 549, 558, 610, 625, 750, 775, 915, 930, 1098, 1125, 1250, 1395, 1525, 1550, 1830, 1875, 1891, 2250, 2325, 2745, 2790, 3050, 3750, 3782, 3875, 4575, 4650, 5490, 5625, 5673, 6975, 7625, 7750, 9150, 9455, 11250, 11346, 11625, 13725, 13950, 15250, 17019, 18910, 19375, 22875, 23250, 27450, 28365, 34038, 34875, 38125, 38750, 45750, 47275, 56730, 58125, 68625, 69750, 76250, 85095, 94550, 114375, 116250, 137250, 141825, 170190, 174375, 228750, 236375, 283650, 343125, 348750, 425475, 472750, 686250, 709125, 850950, 1181875, 1418250, 2127375, 2363750, 3545625, 4254750, 7091250, 10636875, 21273750]

約数ペア:

[(1, 21273750), (2, 10636875), (3, 7091250), (5, 4254750), (6, 3545625), (9, 2363750), (10, 2127375), (15, 1418250), (18, 1181875), (25, 850950), (30, 709125), (31, 686250), (45, 472750), (50, 425475), (61, 348750), (62, 343125), (75, 283650), (90, 236375), (93, 228750), (122, 174375), (125, 170190), (150, 141825), (155, 137250), (183, 116250), (186, 114375), (225, 94550), (250, 85095), (279, 76250), (305, 69750), (310, 68625), (366, 58125), (375, 56730), (450, 47275), (465, 45750), (549, 38750), (558, 38125), (610, 34875), (625, 34038), (750, 28365), (775, 27450), (915, 23250), (930, 22875), (1098, 19375), (1125, 18910), (1250, 17019), (1395, 15250), (1525, 13950), (1550, 13725), (1830, 11625), (1875, 11346), (1891, 11250), (2250, 9455), (2325, 9150), (2745, 7750), (2790, 7625), (3050, 6975), (3750, 5673), (3782, 5625), (3875, 5490), (4575, 4650)]