253678720

素因数分解:

$2^7\times 5^1\times {\mathrm{396373}}^1$

素因数の和:396392

約数の個数: 32

約数和(自身を含む): 606452220

約数和(自身を除く): 352773500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 396373, 792746, 1585492, 1981865, 3170984, 3963730, 6341968, 7927460, 12683936, 15854920, 25367872, 31709840, 50735744, 63419680, 126839360, 253678720]

約数ペア:

[(1, 253678720), (2, 126839360), (4, 63419680), (5, 50735744), (8, 31709840), (10, 25367872), (16, 15854920), (20, 12683936), (32, 7927460), (40, 6341968), (64, 3963730), (80, 3170984), (128, 1981865), (160, 1585492), (320, 792746), (640, 396373)]