25231210

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{409}}^1$

素因数の和:646

約数の個数: 32

約数和(自身を含む): 47232000

約数和(自身を除く): 22000790

約数列:

[1, 2, 5, 10, 31, 62, 155, 199, 310, 398, 409, 818, 995, 1990, 2045, 4090, 6169, 12338, 12679, 25358, 30845, 61690, 63395, 81391, 126790, 162782, 406955, 813910, 2523121, 5046242, 12615605, 25231210]

約数ペア:

[(1, 25231210), (2, 12615605), (5, 5046242), (10, 2523121), (31, 813910), (62, 406955), (155, 162782), (199, 126790), (310, 81391), (398, 63395), (409, 61690), (818, 30845), (995, 25358), (1990, 12679), (2045, 12338), (4090, 6169)]