21471075

素因数分解:

$3^4\times 5^2\times {\mathrm{23}}^1\times {\mathrm{461}}^1$

素因数の和:506

約数の個数: 60

約数和(自身を含む): 41591088

約数和(自身を除く): 20120013

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 81, 115, 135, 207, 225, 345, 405, 461, 575, 621, 675, 1035, 1383, 1725, 1863, 2025, 2305, 3105, 4149, 5175, 6915, 9315, 10603, 11525, 12447, 15525, 20745, 31809, 34575, 37341, 46575, 53015, 62235, 95427, 103725, 159045, 186705, 265075, 286281, 311175, 477135, 795225, 858843, 933525, 1431405, 2385675, 4294215, 7157025, 21471075]

約数ペア:

[(1, 21471075), (3, 7157025), (5, 4294215), (9, 2385675), (15, 1431405), (23, 933525), (25, 858843), (27, 795225), (45, 477135), (69, 311175), (75, 286281), (81, 265075), (115, 186705), (135, 159045), (207, 103725), (225, 95427), (345, 62235), (405, 53015), (461, 46575), (575, 37341), (621, 34575), (675, 31809), (1035, 20745), (1383, 15525), (1725, 12447), (1863, 11525), (2025, 10603), (2305, 9315), (3105, 6915), (4149, 5175)]