77667640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:440

約数の個数: 64

約数和(自身を含む): 179676000

約数和(自身を除く): 102008360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 139, 229, 244, 278, 305, 458, 488, 556, 610, 695, 916, 1112, 1145, 1220, 1390, 1832, 2290, 2440, 2780, 4580, 5560, 8479, 9160, 13969, 16958, 27938, 31831, 33916, 42395, 55876, 63662, 67832, 69845, 84790, 111752, 127324, 139690, 159155, 169580, 254648, 279380, 318310, 339160, 558760, 636620, 1273240, 1941691, 3883382, 7766764, 9708455, 15533528, 19416910, 38833820, 77667640]

約数ペア:

[(1, 77667640), (2, 38833820), (4, 19416910), (5, 15533528), (8, 9708455), (10, 7766764), (20, 3883382), (40, 1941691), (61, 1273240), (122, 636620), (139, 558760), (229, 339160), (244, 318310), (278, 279380), (305, 254648), (458, 169580), (488, 159155), (556, 139690), (610, 127324), (695, 111752), (916, 84790), (1112, 69845), (1145, 67832), (1220, 63662), (1390, 55876), (1832, 42395), (2290, 33916), (2440, 31831), (2780, 27938), (4580, 16958), (5560, 13969), (8479, 9160)]