81764980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{631}}^1$

素因数の和:701

約数の個数: 96

約数和(自身を含む): 203857920

約数和(自身を除く): 122092940

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 31, 38, 44, 55, 62, 76, 95, 110, 124, 155, 190, 209, 220, 310, 341, 380, 418, 589, 620, 631, 682, 836, 1045, 1178, 1262, 1364, 1705, 2090, 2356, 2524, 2945, 3155, 3410, 4180, 5890, 6310, 6479, 6820, 6941, 11780, 11989, 12620, 12958, 13882, 19561, 23978, 25916, 27764, 32395, 34705, 39122, 47956, 59945, 64790, 69410, 78244, 97805, 119890, 129580, 131879, 138820, 195610, 215171, 239780, 263758, 371659, 391220, 430342, 527516, 659395, 743318, 860684, 1075855, 1318790, 1486636, 1858295, 2151710, 2637580, 3716590, 4088249, 4303420, 7433180, 8176498, 16352996, 20441245, 40882490, 81764980]

約数ペア:

[(1, 81764980), (2, 40882490), (4, 20441245), (5, 16352996), (10, 8176498), (11, 7433180), (19, 4303420), (20, 4088249), (22, 3716590), (31, 2637580), (38, 2151710), (44, 1858295), (55, 1486636), (62, 1318790), (76, 1075855), (95, 860684), (110, 743318), (124, 659395), (155, 527516), (190, 430342), (209, 391220), (220, 371659), (310, 263758), (341, 239780), (380, 215171), (418, 195610), (589, 138820), (620, 131879), (631, 129580), (682, 119890), (836, 97805), (1045, 78244), (1178, 69410), (1262, 64790), (1364, 59945), (1705, 47956), (2090, 39122), (2356, 34705), (2524, 32395), (2945, 27764), (3155, 25916), (3410, 23978), (4180, 19561), (5890, 13882), (6310, 12958), (6479, 12620), (6820, 11989), (6941, 11780)]