20287150

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{59}}^1$

素因数の和:130

約数の個数: 72

約数和(自身を含む): 43200360

約数和(自身を除く): 22913210

約数列:

[1, 2, 5, 10, 13, 23, 25, 26, 46, 50, 59, 65, 115, 118, 130, 230, 295, 299, 325, 529, 575, 590, 598, 650, 767, 1058, 1150, 1357, 1475, 1495, 1534, 2645, 2714, 2950, 2990, 3835, 5290, 6785, 6877, 7475, 7670, 13225, 13570, 13754, 14950, 17641, 19175, 26450, 31211, 33925, 34385, 35282, 38350, 62422, 67850, 68770, 88205, 156055, 171925, 176410, 312110, 343850, 405743, 441025, 780275, 811486, 882050, 1560550, 2028715, 4057430, 10143575, 20287150]

約数ペア:

[(1, 20287150), (2, 10143575), (5, 4057430), (10, 2028715), (13, 1560550), (23, 882050), (25, 811486), (26, 780275), (46, 441025), (50, 405743), (59, 343850), (65, 312110), (115, 176410), (118, 171925), (130, 156055), (230, 88205), (295, 68770), (299, 67850), (325, 62422), (529, 38350), (575, 35282), (590, 34385), (598, 33925), (650, 31211), (767, 26450), (1058, 19175), (1150, 17641), (1357, 14950), (1475, 13754), (1495, 13570), (1534, 13225), (2645, 7670), (2714, 7475), (2950, 6877), (2990, 6785), (3835, 5290)]