397789720

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{148429}}^1$

素因数の和:148507

約数の個数: 32

約数和(自身を含む): 908391600

約数和(自身を除く): 510601880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 148429, 296858, 593716, 742145, 1187432, 1484290, 2968580, 5937160, 9944743, 19889486, 39778972, 49723715, 79557944, 99447430, 198894860, 397789720]

約数ペア:

[(1, 397789720), (2, 198894860), (4, 99447430), (5, 79557944), (8, 49723715), (10, 39778972), (20, 19889486), (40, 9944743), (67, 5937160), (134, 2968580), (268, 1484290), (335, 1187432), (536, 742145), (670, 593716), (1340, 296858), (2680, 148429)]