128610820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{6967}}^1$

素因数の和:7060

約数の個数: 48

約数和(自身を含む): 294997248

約数和(自身を除く): 166386428

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 260, 284, 355, 710, 923, 1420, 1846, 3692, 4615, 6967, 9230, 13934, 18460, 27868, 34835, 69670, 90571, 139340, 181142, 362284, 452855, 494657, 905710, 989314, 1811420, 1978628, 2473285, 4946570, 6430541, 9893140, 12861082, 25722164, 32152705, 64305410, 128610820]

約数ペア:

[(1, 128610820), (2, 64305410), (4, 32152705), (5, 25722164), (10, 12861082), (13, 9893140), (20, 6430541), (26, 4946570), (52, 2473285), (65, 1978628), (71, 1811420), (130, 989314), (142, 905710), (260, 494657), (284, 452855), (355, 362284), (710, 181142), (923, 139340), (1420, 90571), (1846, 69670), (3692, 34835), (4615, 27868), (6967, 18460), (9230, 13934)]