19530640

素因数分解:

$2^4\times 5^1\times {\mathrm{241}}^1\times {\mathrm{1013}}^1$

素因数の和:1267

約数の個数: 40

約数和(自身を含む): 45642168

約数和(自身を除く): 26111528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 241, 482, 964, 1013, 1205, 1928, 2026, 2410, 3856, 4052, 4820, 5065, 8104, 9640, 10130, 16208, 19280, 20260, 40520, 81040, 244133, 488266, 976532, 1220665, 1953064, 2441330, 3906128, 4882660, 9765320, 19530640]

約数ペア:

[(1, 19530640), (2, 9765320), (4, 4882660), (5, 3906128), (8, 2441330), (10, 1953064), (16, 1220665), (20, 976532), (40, 488266), (80, 244133), (241, 81040), (482, 40520), (964, 20260), (1013, 19280), (1205, 16208), (1928, 10130), (2026, 9640), (2410, 8104), (3856, 5065), (4052, 4820)]