8864781250

素因数分解:

$2^1\times 5^6\times {\mathrm{13}}^1\times {\mathrm{21821}}^1$

素因数の和:21866

約数の個数: 56

約数和(自身を含む): 17900630244

約数和(自身を除く): 9035848994

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 625, 650, 1250, 1625, 3125, 3250, 6250, 8125, 15625, 16250, 21821, 31250, 40625, 43642, 81250, 109105, 203125, 218210, 283673, 406250, 545525, 567346, 1091050, 1418365, 2727625, 2836730, 5455250, 7091825, 13638125, 14183650, 27276250, 35459125, 68190625, 70918250, 136381250, 177295625, 340953125, 354591250, 681906250, 886478125, 1772956250, 4432390625, 8864781250]

約数ペア:

[(1, 8864781250), (2, 4432390625), (5, 1772956250), (10, 886478125), (13, 681906250), (25, 354591250), (26, 340953125), (50, 177295625), (65, 136381250), (125, 70918250), (130, 68190625), (250, 35459125), (325, 27276250), (625, 14183650), (650, 13638125), (1250, 7091825), (1625, 5455250), (3125, 2836730), (3250, 2727625), (6250, 1418365), (8125, 1091050), (15625, 567346), (16250, 545525), (21821, 406250), (31250, 283673), (40625, 218210), (43642, 203125), (81250, 109105)]