20429988

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:221

約数の個数: 72

約数和(自身を含む): 52194912

約数和(自身を除く): 31764924

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 43, 51, 68, 86, 102, 129, 137, 172, 204, 258, 274, 289, 411, 516, 548, 578, 731, 822, 867, 1156, 1462, 1644, 1734, 2193, 2329, 2924, 3468, 4386, 4658, 5891, 6987, 8772, 9316, 11782, 12427, 13974, 17673, 23564, 24854, 27948, 35346, 37281, 39593, 49708, 70692, 74562, 79186, 100147, 118779, 149124, 158372, 200294, 237558, 300441, 400588, 475116, 600882, 1201764, 1702499, 3404998, 5107497, 6809996, 10214994, 20429988]

約数ペア:

[(1, 20429988), (2, 10214994), (3, 6809996), (4, 5107497), (6, 3404998), (12, 1702499), (17, 1201764), (34, 600882), (43, 475116), (51, 400588), (68, 300441), (86, 237558), (102, 200294), (129, 158372), (137, 149124), (172, 118779), (204, 100147), (258, 79186), (274, 74562), (289, 70692), (411, 49708), (516, 39593), (548, 37281), (578, 35346), (731, 27948), (822, 24854), (867, 23564), (1156, 17673), (1462, 13974), (1644, 12427), (1734, 11782), (2193, 9316), (2329, 8772), (2924, 6987), (3468, 5891), (4386, 4658)]