20392575

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{179}}^1$

素因数の和:237

約数の個数: 72

約数和(自身を含む): 40711680

約数和(自身を除く): 20319105

約数列:

[1, 3, 5, 7, 15, 21, 25, 31, 35, 49, 75, 93, 105, 147, 155, 175, 179, 217, 245, 465, 525, 537, 651, 735, 775, 895, 1085, 1225, 1253, 1519, 2325, 2685, 3255, 3675, 3759, 4475, 4557, 5425, 5549, 6265, 7595, 8771, 13425, 16275, 16647, 18795, 22785, 26313, 27745, 31325, 37975, 38843, 43855, 83235, 93975, 113925, 116529, 131565, 138725, 194215, 219275, 271901, 416175, 582645, 657825, 815703, 971075, 1359505, 2913225, 4078515, 6797525, 20392575]

約数ペア:

[(1, 20392575), (3, 6797525), (5, 4078515), (7, 2913225), (15, 1359505), (21, 971075), (25, 815703), (31, 657825), (35, 582645), (49, 416175), (75, 271901), (93, 219275), (105, 194215), (147, 138725), (155, 131565), (175, 116529), (179, 113925), (217, 93975), (245, 83235), (465, 43855), (525, 38843), (537, 37975), (651, 31325), (735, 27745), (775, 26313), (895, 22785), (1085, 18795), (1225, 16647), (1253, 16275), (1519, 13425), (2325, 8771), (2685, 7595), (3255, 6265), (3675, 5549), (3759, 5425), (4475, 4557)]