81435420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{3739}}^1$

素因数の和:3776

約数の個数: 108

約数和(自身を含む): 271591320

約数和(自身を除く): 190155900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 121, 132, 165, 180, 198, 220, 242, 330, 363, 396, 484, 495, 605, 660, 726, 990, 1089, 1210, 1452, 1815, 1980, 2178, 2420, 3630, 3739, 4356, 5445, 7260, 7478, 10890, 11217, 14956, 18695, 21780, 22434, 33651, 37390, 41129, 44868, 56085, 67302, 74780, 82258, 112170, 123387, 134604, 164516, 168255, 205645, 224340, 246774, 336510, 370161, 411290, 452419, 493548, 616935, 673020, 740322, 822580, 904838, 1233870, 1357257, 1480644, 1809676, 1850805, 2262095, 2467740, 2714514, 3701610, 4071771, 4524190, 5429028, 6786285, 7403220, 8143542, 9048380, 13572570, 16287084, 20358855, 27145140, 40717710, 81435420]

約数ペア:

[(1, 81435420), (2, 40717710), (3, 27145140), (4, 20358855), (5, 16287084), (6, 13572570), (9, 9048380), (10, 8143542), (11, 7403220), (12, 6786285), (15, 5429028), (18, 4524190), (20, 4071771), (22, 3701610), (30, 2714514), (33, 2467740), (36, 2262095), (44, 1850805), (45, 1809676), (55, 1480644), (60, 1357257), (66, 1233870), (90, 904838), (99, 822580), (110, 740322), (121, 673020), (132, 616935), (165, 493548), (180, 452419), (198, 411290), (220, 370161), (242, 336510), (330, 246774), (363, 224340), (396, 205645), (484, 168255), (495, 164516), (605, 134604), (660, 123387), (726, 112170), (990, 82258), (1089, 74780), (1210, 67302), (1452, 56085), (1815, 44868), (1980, 41129), (2178, 37390), (2420, 33651), (3630, 22434), (3739, 21780), (4356, 18695), (5445, 14956), (7260, 11217), (7478, 10890)]