78820625

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:231

約数の個数: 40

約数和(自身を含む): 108246600

約数和(自身を除く): 29425975

約数列:

[1, 5, 13, 25, 65, 89, 109, 125, 325, 445, 545, 625, 1157, 1417, 1625, 2225, 2725, 5785, 7085, 8125, 9701, 11125, 13625, 28925, 35425, 48505, 55625, 68125, 126113, 144625, 177125, 242525, 630565, 723125, 885625, 1212625, 3152825, 6063125, 15764125, 78820625]

約数ペア:

[(1, 78820625), (5, 15764125), (13, 6063125), (25, 3152825), (65, 1212625), (89, 885625), (109, 723125), (125, 630565), (325, 242525), (445, 177125), (545, 144625), (625, 126113), (1157, 68125), (1417, 55625), (1625, 48505), (2225, 35425), (2725, 28925), (5785, 13625), (7085, 11125), (8125, 9701)]