21487480

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{577}}^1$

素因数の和:621

約数の個数: 96

約数和(自身を含む): 59302800

約数和(自身を除く): 37815320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 49, 56, 70, 76, 95, 98, 133, 140, 152, 190, 196, 245, 266, 280, 380, 392, 490, 532, 577, 665, 760, 931, 980, 1064, 1154, 1330, 1862, 1960, 2308, 2660, 2885, 3724, 4039, 4616, 4655, 5320, 5770, 7448, 8078, 9310, 10963, 11540, 16156, 18620, 20195, 21926, 23080, 28273, 32312, 37240, 40390, 43852, 54815, 56546, 76741, 80780, 87704, 109630, 113092, 141365, 153482, 161560, 219260, 226184, 282730, 306964, 383705, 438520, 537187, 565460, 613928, 767410, 1074374, 1130920, 1534820, 2148748, 2685935, 3069640, 4297496, 5371870, 10743740, 21487480]

約数ペア:

[(1, 21487480), (2, 10743740), (4, 5371870), (5, 4297496), (7, 3069640), (8, 2685935), (10, 2148748), (14, 1534820), (19, 1130920), (20, 1074374), (28, 767410), (35, 613928), (38, 565460), (40, 537187), (49, 438520), (56, 383705), (70, 306964), (76, 282730), (95, 226184), (98, 219260), (133, 161560), (140, 153482), (152, 141365), (190, 113092), (196, 109630), (245, 87704), (266, 80780), (280, 76741), (380, 56546), (392, 54815), (490, 43852), (532, 40390), (577, 37240), (665, 32312), (760, 28273), (931, 23080), (980, 21926), (1064, 20195), (1154, 18620), (1330, 16156), (1862, 11540), (1960, 10963), (2308, 9310), (2660, 8078), (2885, 7448), (3724, 5770), (4039, 5320), (4616, 4655)]