7944560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7639}}^1$

素因数の和:7665

約数の個数: 40

約数和(自身を含む): 19894560

約数和(自身を除く): 11950000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 7639, 15278, 30556, 38195, 61112, 76390, 99307, 122224, 152780, 198614, 305560, 397228, 496535, 611120, 794456, 993070, 1588912, 1986140, 3972280, 7944560]

約数ペア:

[(1, 7944560), (2, 3972280), (4, 1986140), (5, 1588912), (8, 993070), (10, 794456), (13, 611120), (16, 496535), (20, 397228), (26, 305560), (40, 198614), (52, 152780), (65, 122224), (80, 99307), (104, 76390), (130, 61112), (208, 38195), (260, 30556), (520, 15278), (1040, 7639)]