2157520

素因数分解:

$2^4\times 5^1\times {\mathrm{149}}^1\times {\mathrm{181}}^1$

素因数の和:343

約数の個数: 40

約数和(自身を含む): 5077800

約数和(自身を除く): 2920280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 149, 181, 298, 362, 596, 724, 745, 905, 1192, 1448, 1490, 1810, 2384, 2896, 2980, 3620, 5960, 7240, 11920, 14480, 26969, 53938, 107876, 134845, 215752, 269690, 431504, 539380, 1078760, 2157520]

約数ペア:

[(1, 2157520), (2, 1078760), (4, 539380), (5, 431504), (8, 269690), (10, 215752), (16, 134845), (20, 107876), (40, 53938), (80, 26969), (149, 14480), (181, 11920), (298, 7240), (362, 5960), (596, 3620), (724, 2980), (745, 2896), (905, 2384), (1192, 1810), (1448, 1490)]