19777960

素因数分解:

$2^3\times 5^1\times {\mathrm{503}}^1\times {\mathrm{983}}^1$

素因数の和:1497

約数の個数: 32

約数和(自身を含む): 44634240

約数和(自身を除く): 24856280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 503, 983, 1006, 1966, 2012, 2515, 3932, 4024, 4915, 5030, 7864, 9830, 10060, 19660, 20120, 39320, 494449, 988898, 1977796, 2472245, 3955592, 4944490, 9888980, 19777960]

約数ペア:

[(1, 19777960), (2, 9888980), (4, 4944490), (5, 3955592), (8, 2472245), (10, 1977796), (20, 988898), (40, 494449), (503, 39320), (983, 20120), (1006, 19660), (1966, 10060), (2012, 9830), (2515, 7864), (3932, 5030), (4024, 4915)]