81595970

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1\times {\mathrm{313}}^1$

素因数の和:650

約数の個数: 32

約数和(自身を含む): 149212800

約数和(自身を除く): 67616830

約数列:

[1, 2, 5, 10, 131, 199, 262, 313, 398, 626, 655, 995, 1310, 1565, 1990, 3130, 26069, 41003, 52138, 62287, 82006, 124574, 130345, 205015, 260690, 311435, 410030, 622870, 8159597, 16319194, 40797985, 81595970]

約数ペア:

[(1, 81595970), (2, 40797985), (5, 16319194), (10, 8159597), (131, 622870), (199, 410030), (262, 311435), (313, 260690), (398, 205015), (626, 130345), (655, 124574), (995, 82006), (1310, 62287), (1565, 52138), (1990, 41003), (3130, 26069)]