21545920

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{6121}}^1$

素因数の和:6149

約数の個数: 56

約数和(自身を含む): 55979568

約数和(自身を除く): 34433648

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 160, 176, 220, 320, 352, 440, 704, 880, 1760, 3520, 6121, 12242, 24484, 30605, 48968, 61210, 67331, 97936, 122420, 134662, 195872, 244840, 269324, 336655, 391744, 489680, 538648, 673310, 979360, 1077296, 1346620, 1958720, 2154592, 2693240, 4309184, 5386480, 10772960, 21545920]

約数ペア:

[(1, 21545920), (2, 10772960), (4, 5386480), (5, 4309184), (8, 2693240), (10, 2154592), (11, 1958720), (16, 1346620), (20, 1077296), (22, 979360), (32, 673310), (40, 538648), (44, 489680), (55, 391744), (64, 336655), (80, 269324), (88, 244840), (110, 195872), (160, 134662), (176, 122420), (220, 97936), (320, 67331), (352, 61210), (440, 48968), (704, 30605), (880, 24484), (1760, 12242), (3520, 6121)]