21861180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:268

約数の個数: 144

約数和(自身を含む): 73932768

約数和(自身を除く): 52071588

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 61, 66, 90, 99, 110, 122, 132, 165, 180, 181, 183, 198, 220, 244, 305, 330, 362, 366, 396, 495, 543, 549, 610, 660, 671, 724, 732, 905, 915, 990, 1086, 1098, 1220, 1342, 1629, 1810, 1830, 1980, 1991, 2013, 2172, 2196, 2684, 2715, 2745, 3258, 3355, 3620, 3660, 3982, 4026, 5430, 5490, 5973, 6039, 6516, 6710, 7964, 8052, 8145, 9955, 10065, 10860, 10980, 11041, 11946, 12078, 13420, 16290, 17919, 19910, 20130, 22082, 23892, 24156, 29865, 30195, 32580, 33123, 35838, 39820, 40260, 44164, 55205, 59730, 60390, 66246, 71676, 89595, 99369, 110410, 119460, 120780, 121451, 132492, 165615, 179190, 198738, 220820, 242902, 331230, 358380, 364353, 397476, 485804, 496845, 607255, 662460, 728706, 993690, 1093059, 1214510, 1457412, 1821765, 1987380, 2186118, 2429020, 3643530, 4372236, 5465295, 7287060, 10930590, 21861180]

約数ペア:

[(1, 21861180), (2, 10930590), (3, 7287060), (4, 5465295), (5, 4372236), (6, 3643530), (9, 2429020), (10, 2186118), (11, 1987380), (12, 1821765), (15, 1457412), (18, 1214510), (20, 1093059), (22, 993690), (30, 728706), (33, 662460), (36, 607255), (44, 496845), (45, 485804), (55, 397476), (60, 364353), (61, 358380), (66, 331230), (90, 242902), (99, 220820), (110, 198738), (122, 179190), (132, 165615), (165, 132492), (180, 121451), (181, 120780), (183, 119460), (198, 110410), (220, 99369), (244, 89595), (305, 71676), (330, 66246), (362, 60390), (366, 59730), (396, 55205), (495, 44164), (543, 40260), (549, 39820), (610, 35838), (660, 33123), (671, 32580), (724, 30195), (732, 29865), (905, 24156), (915, 23892), (990, 22082), (1086, 20130), (1098, 19910), (1220, 17919), (1342, 16290), (1629, 13420), (1810, 12078), (1830, 11946), (1980, 11041), (1991, 10980), (2013, 10860), (2172, 10065), (2196, 9955), (2684, 8145), (2715, 8052), (2745, 7964), (3258, 6710), (3355, 6516), (3620, 6039), (3660, 5973), (3982, 5490), (4026, 5430)]