20201916

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:128

約数の個数: 144

約数和(自身を含む): 60673536

約数和(自身を除く): 40471620

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 17, 21, 28, 34, 42, 43, 47, 49, 51, 68, 84, 86, 94, 98, 102, 119, 129, 141, 147, 172, 188, 196, 204, 238, 258, 282, 294, 301, 329, 357, 476, 516, 564, 588, 602, 658, 714, 731, 799, 833, 903, 987, 1204, 1316, 1428, 1462, 1598, 1666, 1806, 1974, 2021, 2107, 2193, 2303, 2397, 2499, 2924, 3196, 3332, 3612, 3948, 4042, 4214, 4386, 4606, 4794, 4998, 5117, 5593, 6063, 6321, 6909, 8084, 8428, 8772, 9212, 9588, 9996, 10234, 11186, 12126, 12642, 13818, 14147, 15351, 16779, 20468, 22372, 24252, 25284, 27636, 28294, 30702, 33558, 34357, 35819, 39151, 42441, 56588, 61404, 67116, 68714, 71638, 78302, 84882, 99029, 103071, 107457, 117453, 137428, 143276, 156604, 169764, 198058, 206142, 214914, 234906, 240499, 297087, 396116, 412284, 429828, 469812, 480998, 594174, 721497, 961996, 1188348, 1442994, 1683493, 2885988, 3366986, 5050479, 6733972, 10100958, 20201916]

約数ペア:

[(1, 20201916), (2, 10100958), (3, 6733972), (4, 5050479), (6, 3366986), (7, 2885988), (12, 1683493), (14, 1442994), (17, 1188348), (21, 961996), (28, 721497), (34, 594174), (42, 480998), (43, 469812), (47, 429828), (49, 412284), (51, 396116), (68, 297087), (84, 240499), (86, 234906), (94, 214914), (98, 206142), (102, 198058), (119, 169764), (129, 156604), (141, 143276), (147, 137428), (172, 117453), (188, 107457), (196, 103071), (204, 99029), (238, 84882), (258, 78302), (282, 71638), (294, 68714), (301, 67116), (329, 61404), (357, 56588), (476, 42441), (516, 39151), (564, 35819), (588, 34357), (602, 33558), (658, 30702), (714, 28294), (731, 27636), (799, 25284), (833, 24252), (903, 22372), (987, 20468), (1204, 16779), (1316, 15351), (1428, 14147), (1462, 13818), (1598, 12642), (1666, 12126), (1806, 11186), (1974, 10234), (2021, 9996), (2107, 9588), (2193, 9212), (2303, 8772), (2397, 8428), (2499, 8084), (2924, 6909), (3196, 6321), (3332, 6063), (3612, 5593), (3948, 5117), (4042, 4998), (4214, 4794), (4386, 4606)]