90243920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4567}}^1$

素因数の和:4612

約数の個数: 80

約数和(自身を含む): 237901440

約数和(自身を除く): 147657520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1520, 1976, 2470, 3952, 4567, 4940, 9134, 9880, 18268, 19760, 22835, 36536, 45670, 59371, 73072, 86773, 91340, 118742, 173546, 182680, 237484, 296855, 347092, 365360, 433865, 474968, 593710, 694184, 867730, 949936, 1128049, 1187420, 1388368, 1735460, 2256098, 2374840, 3470920, 4512196, 4749680, 5640245, 6941840, 9024392, 11280490, 18048784, 22560980, 45121960, 90243920]

約数ペア:

[(1, 90243920), (2, 45121960), (4, 22560980), (5, 18048784), (8, 11280490), (10, 9024392), (13, 6941840), (16, 5640245), (19, 4749680), (20, 4512196), (26, 3470920), (38, 2374840), (40, 2256098), (52, 1735460), (65, 1388368), (76, 1187420), (80, 1128049), (95, 949936), (104, 867730), (130, 694184), (152, 593710), (190, 474968), (208, 433865), (247, 365360), (260, 347092), (304, 296855), (380, 237484), (494, 182680), (520, 173546), (760, 118742), (988, 91340), (1040, 86773), (1235, 73072), (1520, 59371), (1976, 45670), (2470, 36536), (3952, 22835), (4567, 19760), (4940, 18268), (9134, 9880)]