2563220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{191}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 5999616

約数和(自身を除く): 3436396

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 122, 191, 220, 244, 305, 382, 610, 671, 764, 955, 1220, 1342, 1910, 2101, 2684, 3355, 3820, 4202, 6710, 8404, 10505, 11651, 13420, 21010, 23302, 42020, 46604, 58255, 116510, 128161, 233020, 256322, 512644, 640805, 1281610, 2563220]

約数ペア:

[(1, 2563220), (2, 1281610), (4, 640805), (5, 512644), (10, 256322), (11, 233020), (20, 128161), (22, 116510), (44, 58255), (55, 46604), (61, 42020), (110, 23302), (122, 21010), (191, 13420), (220, 11651), (244, 10505), (305, 8404), (382, 6710), (610, 4202), (671, 3820), (764, 3355), (955, 2684), (1220, 2101), (1342, 1910)]