28090020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1423}}^1$

素因数の和:1489

約数の個数: 96

約数和(自身を含む): 91865088

約数和(自身を除く): 63775068

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, 1423, 1645, 1974, 2820, 2846, 3290, 3948, 4269, 4935, 5692, 6580, 7115, 8538, 9870, 9961, 14230, 17076, 19740, 19922, 21345, 28460, 29883, 39844, 42690, 49805, 59766, 66881, 85380, 99610, 119532, 133762, 149415, 199220, 200643, 267524, 298830, 334405, 401286, 468167, 597660, 668810, 802572, 936334, 1003215, 1337620, 1404501, 1872668, 2006430, 2340835, 2809002, 4012860, 4681670, 5618004, 7022505, 9363340, 14045010, 28090020]

約数ペア:

[(1, 28090020), (2, 14045010), (3, 9363340), (4, 7022505), (5, 5618004), (6, 4681670), (7, 4012860), (10, 2809002), (12, 2340835), (14, 2006430), (15, 1872668), (20, 1404501), (21, 1337620), (28, 1003215), (30, 936334), (35, 802572), (42, 668810), (47, 597660), (60, 468167), (70, 401286), (84, 334405), (94, 298830), (105, 267524), (140, 200643), (141, 199220), (188, 149415), (210, 133762), (235, 119532), (282, 99610), (329, 85380), (420, 66881), (470, 59766), (564, 49805), (658, 42690), (705, 39844), (940, 29883), (987, 28460), (1316, 21345), (1410, 19922), (1423, 19740), (1645, 17076), (1974, 14230), (2820, 9961), (2846, 9870), (3290, 8538), (3948, 7115), (4269, 6580), (4935, 5692)]