81778920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1031}}^1$

素因数の和:1706

約数の個数: 64

約数和(自身を含む): 245946240

約数和(自身を除く): 164167320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 661, 1031, 1322, 1983, 2062, 2644, 3093, 3305, 3966, 4124, 5155, 5288, 6186, 6610, 7932, 8248, 9915, 10310, 12372, 13220, 15465, 15864, 19830, 20620, 24744, 26440, 30930, 39660, 41240, 61860, 79320, 123720, 681491, 1362982, 2044473, 2725964, 3407455, 4088946, 5451928, 6814910, 8177892, 10222365, 13629820, 16355784, 20444730, 27259640, 40889460, 81778920]

約数ペア:

[(1, 81778920), (2, 40889460), (3, 27259640), (4, 20444730), (5, 16355784), (6, 13629820), (8, 10222365), (10, 8177892), (12, 6814910), (15, 5451928), (20, 4088946), (24, 3407455), (30, 2725964), (40, 2044473), (60, 1362982), (120, 681491), (661, 123720), (1031, 79320), (1322, 61860), (1983, 41240), (2062, 39660), (2644, 30930), (3093, 26440), (3305, 24744), (3966, 20620), (4124, 19830), (5155, 15864), (5288, 15465), (6186, 13220), (6610, 12372), (7932, 10310), (8248, 9915)]