18981228

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1699}}^1$

素因数の和:1739

約数の個数: 72

約数和(自身を含む): 54264000

約数和(自身を除く): 35282772

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 28, 38, 42, 49, 57, 76, 84, 98, 114, 133, 147, 196, 228, 266, 294, 399, 532, 588, 798, 931, 1596, 1699, 1862, 2793, 3398, 3724, 5097, 5586, 6796, 10194, 11172, 11893, 20388, 23786, 32281, 35679, 47572, 64562, 71358, 83251, 96843, 129124, 142716, 166502, 193686, 225967, 249753, 333004, 387372, 451934, 499506, 677901, 903868, 999012, 1355802, 1581769, 2711604, 3163538, 4745307, 6327076, 9490614, 18981228]

約数ペア:

[(1, 18981228), (2, 9490614), (3, 6327076), (4, 4745307), (6, 3163538), (7, 2711604), (12, 1581769), (14, 1355802), (19, 999012), (21, 903868), (28, 677901), (38, 499506), (42, 451934), (49, 387372), (57, 333004), (76, 249753), (84, 225967), (98, 193686), (114, 166502), (133, 142716), (147, 129124), (196, 96843), (228, 83251), (266, 71358), (294, 64562), (399, 47572), (532, 35679), (588, 32281), (798, 23786), (931, 20388), (1596, 11893), (1699, 11172), (1862, 10194), (2793, 6796), (3398, 5586), (3724, 5097)]