9903940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{389}}^1$

素因数の和:484

約数の個数: 48

約数和(自身を含む): 22276800

約数和(自身を除く): 12372860

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 67, 76, 95, 134, 190, 268, 335, 380, 389, 670, 778, 1273, 1340, 1556, 1945, 2546, 3890, 5092, 6365, 7391, 7780, 12730, 14782, 25460, 26063, 29564, 36955, 52126, 73910, 104252, 130315, 147820, 260630, 495197, 521260, 990394, 1980788, 2475985, 4951970, 9903940]

約数ペア:

[(1, 9903940), (2, 4951970), (4, 2475985), (5, 1980788), (10, 990394), (19, 521260), (20, 495197), (38, 260630), (67, 147820), (76, 130315), (95, 104252), (134, 73910), (190, 52126), (268, 36955), (335, 29564), (380, 26063), (389, 25460), (670, 14782), (778, 12730), (1273, 7780), (1340, 7391), (1556, 6365), (1945, 5092), (2546, 3890)]