12840320

素因数分解:

$2^7\times 5^1\times {\mathrm{20063}}^1$

素因数の和:20082

約数の個数: 32

約数和(自身を含む): 30697920

約数和(自身を除く): 17857600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 20063, 40126, 80252, 100315, 160504, 200630, 321008, 401260, 642016, 802520, 1284032, 1605040, 2568064, 3210080, 6420160, 12840320]

約数ペア:

[(1, 12840320), (2, 6420160), (4, 3210080), (5, 2568064), (8, 1605040), (10, 1284032), (16, 802520), (20, 642016), (32, 401260), (40, 321008), (64, 200630), (80, 160504), (128, 100315), (160, 80252), (320, 40126), (640, 20063)]