21025875

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{227}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 39836160

約数和(自身を除く): 18810285

約数列:

[1, 3, 5, 13, 15, 19, 25, 39, 57, 65, 75, 95, 125, 195, 227, 247, 285, 325, 375, 475, 681, 741, 975, 1135, 1235, 1425, 1625, 2375, 2951, 3405, 3705, 4313, 4875, 5675, 6175, 7125, 8853, 12939, 14755, 17025, 18525, 21565, 28375, 30875, 44265, 56069, 64695, 73775, 85125, 92625, 107825, 168207, 221325, 280345, 323475, 368875, 539125, 841035, 1106625, 1401725, 1617375, 4205175, 7008625, 21025875]

約数ペア:

[(1, 21025875), (3, 7008625), (5, 4205175), (13, 1617375), (15, 1401725), (19, 1106625), (25, 841035), (39, 539125), (57, 368875), (65, 323475), (75, 280345), (95, 221325), (125, 168207), (195, 107825), (227, 92625), (247, 85125), (285, 73775), (325, 64695), (375, 56069), (475, 44265), (681, 30875), (741, 28375), (975, 21565), (1135, 18525), (1235, 17025), (1425, 14755), (1625, 12939), (2375, 8853), (2951, 7125), (3405, 6175), (3705, 5675), (4313, 4875)]