9911980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{569}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 22790880

約数和(自身を除く): 12878900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 260, 268, 335, 569, 670, 871, 1138, 1340, 1742, 2276, 2845, 3484, 4355, 5690, 7397, 8710, 11380, 14794, 17420, 29588, 36985, 38123, 73970, 76246, 147940, 152492, 190615, 381230, 495599, 762460, 991198, 1982396, 2477995, 4955990, 9911980]

約数ペア:

[(1, 9911980), (2, 4955990), (4, 2477995), (5, 1982396), (10, 991198), (13, 762460), (20, 495599), (26, 381230), (52, 190615), (65, 152492), (67, 147940), (130, 76246), (134, 73970), (260, 38123), (268, 36985), (335, 29588), (569, 17420), (670, 14794), (871, 11380), (1138, 8710), (1340, 7397), (1742, 5690), (2276, 4355), (2845, 3484)]