28405860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1439}}^1$

素因数の和:1505

約数の個数: 96

約数和(自身を含む): 92897280

約数和(自身を除く): 64491420

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 47, 60, 70, 84, 94, 105, 140, 141, 188, 210, 235, 282, 329, 420, 470, 564, 658, 705, 940, 987, 1316, 1410, 1439, 1645, 1974, 2820, 2878, 3290, 3948, 4317, 4935, 5756, 6580, 7195, 8634, 9870, 10073, 14390, 17268, 19740, 20146, 21585, 28780, 30219, 40292, 43170, 50365, 60438, 67633, 86340, 100730, 120876, 135266, 151095, 201460, 202899, 270532, 302190, 338165, 405798, 473431, 604380, 676330, 811596, 946862, 1014495, 1352660, 1420293, 1893724, 2028990, 2367155, 2840586, 4057980, 4734310, 5681172, 7101465, 9468620, 14202930, 28405860]

約数ペア:

[(1, 28405860), (2, 14202930), (3, 9468620), (4, 7101465), (5, 5681172), (6, 4734310), (7, 4057980), (10, 2840586), (12, 2367155), (14, 2028990), (15, 1893724), (20, 1420293), (21, 1352660), (28, 1014495), (30, 946862), (35, 811596), (42, 676330), (47, 604380), (60, 473431), (70, 405798), (84, 338165), (94, 302190), (105, 270532), (140, 202899), (141, 201460), (188, 151095), (210, 135266), (235, 120876), (282, 100730), (329, 86340), (420, 67633), (470, 60438), (564, 50365), (658, 43170), (705, 40292), (940, 30219), (987, 28780), (1316, 21585), (1410, 20146), (1439, 19740), (1645, 17268), (1974, 14390), (2820, 10073), (2878, 9870), (3290, 8634), (3948, 7195), (4317, 6580), (4935, 5756)]