25885000

素因数分解:

$2^3\times 5^4\times {\mathrm{31}}^1\times {\mathrm{167}}^1$

素因数の和:224

約数の個数: 80

約数和(自身を含む): 62979840

約数和(自身を除く): 37094840

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 125, 155, 167, 200, 248, 250, 310, 334, 500, 620, 625, 668, 775, 835, 1000, 1240, 1250, 1336, 1550, 1670, 2500, 3100, 3340, 3875, 4175, 5000, 5177, 6200, 6680, 7750, 8350, 10354, 15500, 16700, 19375, 20708, 20875, 25885, 31000, 33400, 38750, 41416, 41750, 51770, 77500, 83500, 103540, 104375, 129425, 155000, 167000, 207080, 208750, 258850, 417500, 517700, 647125, 835000, 1035400, 1294250, 2588500, 3235625, 5177000, 6471250, 12942500, 25885000]

約数ペア:

[(1, 25885000), (2, 12942500), (4, 6471250), (5, 5177000), (8, 3235625), (10, 2588500), (20, 1294250), (25, 1035400), (31, 835000), (40, 647125), (50, 517700), (62, 417500), (100, 258850), (124, 208750), (125, 207080), (155, 167000), (167, 155000), (200, 129425), (248, 104375), (250, 103540), (310, 83500), (334, 77500), (500, 51770), (620, 41750), (625, 41416), (668, 38750), (775, 33400), (835, 31000), (1000, 25885), (1240, 20875), (1250, 20708), (1336, 19375), (1550, 16700), (1670, 15500), (2500, 10354), (3100, 8350), (3340, 7750), (3875, 6680), (4175, 6200), (5000, 5177)]