213572020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{881}}^1$

素因数の和:961

約数の個数: 96

約数和(自身を含む): 512096256

約数和(自身を除く): 298524236

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 31, 34, 46, 62, 68, 85, 92, 115, 124, 155, 170, 230, 310, 340, 391, 460, 527, 620, 713, 782, 881, 1054, 1426, 1564, 1762, 1955, 2108, 2635, 2852, 3524, 3565, 3910, 4405, 5270, 7130, 7820, 8810, 10540, 12121, 14260, 14977, 17620, 20263, 24242, 27311, 29954, 40526, 48484, 54622, 59908, 60605, 74885, 81052, 101315, 109244, 121210, 136555, 149770, 202630, 242420, 273110, 299540, 344471, 405260, 464287, 546220, 628153, 688942, 928574, 1256306, 1377884, 1722355, 1857148, 2321435, 2512612, 3140765, 3444710, 4642870, 6281530, 6889420, 9285740, 10678601, 12563060, 21357202, 42714404, 53393005, 106786010, 213572020]

約数ペア:

[(1, 213572020), (2, 106786010), (4, 53393005), (5, 42714404), (10, 21357202), (17, 12563060), (20, 10678601), (23, 9285740), (31, 6889420), (34, 6281530), (46, 4642870), (62, 3444710), (68, 3140765), (85, 2512612), (92, 2321435), (115, 1857148), (124, 1722355), (155, 1377884), (170, 1256306), (230, 928574), (310, 688942), (340, 628153), (391, 546220), (460, 464287), (527, 405260), (620, 344471), (713, 299540), (782, 273110), (881, 242420), (1054, 202630), (1426, 149770), (1564, 136555), (1762, 121210), (1955, 109244), (2108, 101315), (2635, 81052), (2852, 74885), (3524, 60605), (3565, 59908), (3910, 54622), (4405, 48484), (5270, 40526), (7130, 29954), (7820, 27311), (8810, 24242), (10540, 20263), (12121, 17620), (14260, 14977)]