65341840

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1997}}^1$

素因数の和:2419

約数の個数: 40

約数和(自身を含む): 152367480

約数和(自身を除く): 87025640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 1636, 1997, 2045, 3272, 3994, 4090, 6544, 7988, 8180, 9985, 15976, 16360, 19970, 31952, 32720, 39940, 79880, 159760, 816773, 1633546, 3267092, 4083865, 6534184, 8167730, 13068368, 16335460, 32670920, 65341840]

約数ペア:

[(1, 65341840), (2, 32670920), (4, 16335460), (5, 13068368), (8, 8167730), (10, 6534184), (16, 4083865), (20, 3267092), (40, 1633546), (80, 816773), (409, 159760), (818, 79880), (1636, 39940), (1997, 32720), (2045, 31952), (3272, 19970), (3994, 16360), (4090, 15976), (6544, 9985), (7988, 8180)]