21949875

素因数分解:

$3^2\times 5^3\times {\mathrm{109}}^1\times {\mathrm{179}}^1$

素因数の和:309

約数の個数: 48

約数和(自身を含む): 40154400

約数和(自身を除く): 18204525

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 109, 125, 179, 225, 327, 375, 537, 545, 895, 981, 1125, 1611, 1635, 2685, 2725, 4475, 4905, 8055, 8175, 13425, 13625, 19511, 22375, 24525, 40275, 40875, 58533, 67125, 97555, 122625, 175599, 201375, 292665, 487775, 877995, 1463325, 2438875, 4389975, 7316625, 21949875]

約数ペア:

[(1, 21949875), (3, 7316625), (5, 4389975), (9, 2438875), (15, 1463325), (25, 877995), (45, 487775), (75, 292665), (109, 201375), (125, 175599), (179, 122625), (225, 97555), (327, 67125), (375, 58533), (537, 40875), (545, 40275), (895, 24525), (981, 22375), (1125, 19511), (1611, 13625), (1635, 13425), (2685, 8175), (2725, 8055), (4475, 4905)]