388302520

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{144889}}^1$

素因数の和:144967

約数の個数: 32

約数和(自身を含む): 886726800

約数和(自身を除く): 498424280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 144889, 289778, 579556, 724445, 1159112, 1448890, 2897780, 5795560, 9707563, 19415126, 38830252, 48537815, 77660504, 97075630, 194151260, 388302520]

約数ペア:

[(1, 388302520), (2, 194151260), (4, 97075630), (5, 77660504), (8, 48537815), (10, 38830252), (20, 19415126), (40, 9707563), (67, 5795560), (134, 2897780), (268, 1448890), (335, 1159112), (536, 724445), (670, 579556), (1340, 289778), (2680, 144889)]