18564140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{997}}^1$

素因数の和:1039

約数の個数: 72

約数和(自身を含む): 47784240

約数和(自身を除く): 29220100

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 490, 532, 665, 931, 980, 997, 1330, 1862, 1994, 2660, 3724, 3988, 4655, 4985, 6979, 9310, 9970, 13958, 18620, 18943, 19940, 27916, 34895, 37886, 48853, 69790, 75772, 94715, 97706, 132601, 139580, 189430, 195412, 244265, 265202, 378860, 488530, 530404, 663005, 928207, 977060, 1326010, 1856414, 2652020, 3712828, 4641035, 9282070, 18564140]

約数ペア:

[(1, 18564140), (2, 9282070), (4, 4641035), (5, 3712828), (7, 2652020), (10, 1856414), (14, 1326010), (19, 977060), (20, 928207), (28, 663005), (35, 530404), (38, 488530), (49, 378860), (70, 265202), (76, 244265), (95, 195412), (98, 189430), (133, 139580), (140, 132601), (190, 97706), (196, 94715), (245, 75772), (266, 69790), (380, 48853), (490, 37886), (532, 34895), (665, 27916), (931, 19940), (980, 18943), (997, 18620), (1330, 13958), (1862, 9970), (1994, 9310), (2660, 6979), (3724, 4985), (3988, 4655)]