21359625

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:207

約数の個数: 64

約数和(自身を含む): 41533440

約数和(自身を除く): 20173815

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 79, 103, 105, 125, 175, 237, 309, 375, 395, 515, 525, 553, 721, 875, 1185, 1545, 1659, 1975, 2163, 2575, 2625, 2765, 3605, 5925, 7725, 8137, 8295, 9875, 10815, 12875, 13825, 18025, 24411, 29625, 38625, 40685, 41475, 54075, 56959, 69125, 90125, 122055, 170877, 203425, 207375, 270375, 284795, 610275, 854385, 1017125, 1423975, 3051375, 4271925, 7119875, 21359625]

約数ペア:

[(1, 21359625), (3, 7119875), (5, 4271925), (7, 3051375), (15, 1423975), (21, 1017125), (25, 854385), (35, 610275), (75, 284795), (79, 270375), (103, 207375), (105, 203425), (125, 170877), (175, 122055), (237, 90125), (309, 69125), (375, 56959), (395, 54075), (515, 41475), (525, 40685), (553, 38625), (721, 29625), (875, 24411), (1185, 18025), (1545, 13825), (1659, 12875), (1975, 10815), (2163, 9875), (2575, 8295), (2625, 8137), (2765, 7725), (3605, 5925)]