12815500

素因数分解:

$2^2\times 5^3\times {\mathrm{19}}^2\times {\mathrm{71}}^1$

素因数の和:128

約数の個数: 72

約数和(自身を含む): 29955744

約数和(自身を除く): 17140244

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 71, 76, 95, 100, 125, 142, 190, 250, 284, 355, 361, 380, 475, 500, 710, 722, 950, 1349, 1420, 1444, 1775, 1805, 1900, 2375, 2698, 3550, 3610, 4750, 5396, 6745, 7100, 7220, 8875, 9025, 9500, 13490, 17750, 18050, 25631, 26980, 33725, 35500, 36100, 45125, 51262, 67450, 90250, 102524, 128155, 134900, 168625, 180500, 256310, 337250, 512620, 640775, 674500, 1281550, 2563100, 3203875, 6407750, 12815500]

約数ペア:

[(1, 12815500), (2, 6407750), (4, 3203875), (5, 2563100), (10, 1281550), (19, 674500), (20, 640775), (25, 512620), (38, 337250), (50, 256310), (71, 180500), (76, 168625), (95, 134900), (100, 128155), (125, 102524), (142, 90250), (190, 67450), (250, 51262), (284, 45125), (355, 36100), (361, 35500), (380, 33725), (475, 26980), (500, 25631), (710, 18050), (722, 17750), (950, 13490), (1349, 9500), (1420, 9025), (1444, 8875), (1775, 7220), (1805, 7100), (1900, 6745), (2375, 5396), (2698, 4750), (3550, 3610)]