31989880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61519}}^1$

素因数の和:61543

約数の個数: 32

約数和(自身を含む): 77515200

約数和(自身を除く): 45525320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 61519, 123038, 246076, 307595, 492152, 615190, 799747, 1230380, 1599494, 2460760, 3198988, 3998735, 6397976, 7997470, 15994940, 31989880]

約数ペア:

[(1, 31989880), (2, 15994940), (4, 7997470), (5, 6397976), (8, 3998735), (10, 3198988), (13, 2460760), (20, 1599494), (26, 1230380), (40, 799747), (52, 615190), (65, 492152), (104, 307595), (130, 246076), (260, 123038), (520, 61519)]