21180060

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{563}}^1$

素因数の和:608

約数の個数: 144

約数和(自身を含む): 73906560

約数和(自身を除く): 52726500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 19, 20, 22, 30, 33, 36, 38, 44, 45, 55, 57, 60, 66, 76, 90, 95, 99, 110, 114, 132, 165, 171, 180, 190, 198, 209, 220, 228, 285, 330, 342, 380, 396, 418, 495, 563, 570, 627, 660, 684, 836, 855, 990, 1045, 1126, 1140, 1254, 1689, 1710, 1881, 1980, 2090, 2252, 2508, 2815, 3135, 3378, 3420, 3762, 4180, 5067, 5630, 6193, 6270, 6756, 7524, 8445, 9405, 10134, 10697, 11260, 12386, 12540, 16890, 18579, 18810, 20268, 21394, 24772, 25335, 30965, 32091, 33780, 37158, 37620, 42788, 50670, 53485, 55737, 61930, 64182, 74316, 92895, 96273, 101340, 106970, 111474, 117667, 123860, 128364, 160455, 185790, 192546, 213940, 222948, 235334, 278685, 320910, 353001, 371580, 385092, 470668, 481365, 557370, 588335, 641820, 706002, 962730, 1059003, 1114740, 1176670, 1412004, 1765005, 1925460, 2118006, 2353340, 3530010, 4236012, 5295015, 7060020, 10590030, 21180060]

約数ペア:

[(1, 21180060), (2, 10590030), (3, 7060020), (4, 5295015), (5, 4236012), (6, 3530010), (9, 2353340), (10, 2118006), (11, 1925460), (12, 1765005), (15, 1412004), (18, 1176670), (19, 1114740), (20, 1059003), (22, 962730), (30, 706002), (33, 641820), (36, 588335), (38, 557370), (44, 481365), (45, 470668), (55, 385092), (57, 371580), (60, 353001), (66, 320910), (76, 278685), (90, 235334), (95, 222948), (99, 213940), (110, 192546), (114, 185790), (132, 160455), (165, 128364), (171, 123860), (180, 117667), (190, 111474), (198, 106970), (209, 101340), (220, 96273), (228, 92895), (285, 74316), (330, 64182), (342, 61930), (380, 55737), (396, 53485), (418, 50670), (495, 42788), (563, 37620), (570, 37158), (627, 33780), (660, 32091), (684, 30965), (836, 25335), (855, 24772), (990, 21394), (1045, 20268), (1126, 18810), (1140, 18579), (1254, 16890), (1689, 12540), (1710, 12386), (1881, 11260), (1980, 10697), (2090, 10134), (2252, 9405), (2508, 8445), (2815, 7524), (3135, 6756), (3378, 6270), (3420, 6193), (3762, 5630), (4180, 5067)]