201012020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{2531}}^1$

素因数の和:2589

約数の個数: 72

約数和(自身を含む): 486204768

約数和(自身を除く): 285192748

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 361, 380, 418, 722, 836, 1045, 1444, 1805, 2090, 2531, 3610, 3971, 4180, 5062, 7220, 7942, 10124, 12655, 15884, 19855, 25310, 27841, 39710, 48089, 50620, 55682, 79420, 96178, 111364, 139205, 192356, 240445, 278410, 480890, 528979, 556820, 913691, 961780, 1057958, 1827382, 2115916, 2644895, 3654764, 4568455, 5289790, 9136910, 10050601, 10579580, 18273820, 20101202, 40202404, 50253005, 100506010, 201012020]

約数ペア:

[(1, 201012020), (2, 100506010), (4, 50253005), (5, 40202404), (10, 20101202), (11, 18273820), (19, 10579580), (20, 10050601), (22, 9136910), (38, 5289790), (44, 4568455), (55, 3654764), (76, 2644895), (95, 2115916), (110, 1827382), (190, 1057958), (209, 961780), (220, 913691), (361, 556820), (380, 528979), (418, 480890), (722, 278410), (836, 240445), (1045, 192356), (1444, 139205), (1805, 111364), (2090, 96178), (2531, 79420), (3610, 55682), (3971, 50620), (4180, 48089), (5062, 39710), (7220, 27841), (7942, 25310), (10124, 19855), (12655, 15884)]