21057450

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{1777}}^1$

素因数の和:1871

約数の個数: 48

約数和(自身を含む): 52913280

約数和(自身を除く): 31855830

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 79, 150, 158, 237, 395, 474, 790, 1185, 1777, 1975, 2370, 3554, 3950, 5331, 5925, 8885, 10662, 11850, 17770, 26655, 44425, 53310, 88850, 133275, 140383, 266550, 280766, 421149, 701915, 842298, 1403830, 2105745, 3509575, 4211490, 7019150, 10528725, 21057450]

約数ペア:

[(1, 21057450), (2, 10528725), (3, 7019150), (5, 4211490), (6, 3509575), (10, 2105745), (15, 1403830), (25, 842298), (30, 701915), (50, 421149), (75, 280766), (79, 266550), (150, 140383), (158, 133275), (237, 88850), (395, 53310), (474, 44425), (790, 26655), (1185, 17770), (1777, 11850), (1975, 10662), (2370, 8885), (3554, 5925), (3950, 5331)]