90821560

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{701}}^1$

素因数の和:832

約数の個数: 64

約数和(自身を含む): 212284800

約数和(自身を除く): 121463240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 79, 82, 158, 164, 205, 316, 328, 395, 410, 632, 701, 790, 820, 1402, 1580, 1640, 2804, 3160, 3239, 3505, 5608, 6478, 7010, 12956, 14020, 16195, 25912, 28040, 28741, 32390, 55379, 57482, 64780, 110758, 114964, 129560, 143705, 221516, 229928, 276895, 287410, 443032, 553790, 574820, 1107580, 1149640, 2215160, 2270539, 4541078, 9082156, 11352695, 18164312, 22705390, 45410780, 90821560]

約数ペア:

[(1, 90821560), (2, 45410780), (4, 22705390), (5, 18164312), (8, 11352695), (10, 9082156), (20, 4541078), (40, 2270539), (41, 2215160), (79, 1149640), (82, 1107580), (158, 574820), (164, 553790), (205, 443032), (316, 287410), (328, 276895), (395, 229928), (410, 221516), (632, 143705), (701, 129560), (790, 114964), (820, 110758), (1402, 64780), (1580, 57482), (1640, 55379), (2804, 32390), (3160, 28741), (3239, 28040), (3505, 25912), (5608, 16195), (6478, 14020), (7010, 12956)]