87780220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:323

約数の個数: 96

約数和(自身を含む): 211986432

約数和(自身を除く): 124206212

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 61, 62, 110, 122, 124, 155, 211, 220, 244, 305, 310, 341, 422, 610, 620, 671, 682, 844, 1055, 1220, 1342, 1364, 1705, 1891, 2110, 2321, 2684, 3355, 3410, 3782, 4220, 4642, 6541, 6710, 6820, 7564, 9284, 9455, 11605, 12871, 13082, 13420, 18910, 20801, 23210, 25742, 26164, 32705, 37820, 41602, 46420, 51484, 64355, 65410, 71951, 83204, 104005, 128710, 130820, 141581, 143902, 208010, 257420, 283162, 287804, 359755, 399001, 416020, 566324, 707905, 719510, 798002, 1415810, 1439020, 1596004, 1995005, 2831620, 3990010, 4389011, 7980020, 8778022, 17556044, 21945055, 43890110, 87780220]

約数ペア:

[(1, 87780220), (2, 43890110), (4, 21945055), (5, 17556044), (10, 8778022), (11, 7980020), (20, 4389011), (22, 3990010), (31, 2831620), (44, 1995005), (55, 1596004), (61, 1439020), (62, 1415810), (110, 798002), (122, 719510), (124, 707905), (155, 566324), (211, 416020), (220, 399001), (244, 359755), (305, 287804), (310, 283162), (341, 257420), (422, 208010), (610, 143902), (620, 141581), (671, 130820), (682, 128710), (844, 104005), (1055, 83204), (1220, 71951), (1342, 65410), (1364, 64355), (1705, 51484), (1891, 46420), (2110, 41602), (2321, 37820), (2684, 32705), (3355, 26164), (3410, 25742), (3782, 23210), (4220, 20801), (4642, 18910), (6541, 13420), (6710, 13082), (6820, 12871), (7564, 11605), (9284, 9455)]