20620425

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:239

約数の個数: 72

約数和(自身を含む): 41164032

約数和(自身を除く): 20543607

約数列:

[1, 3, 5, 7, 15, 21, 25, 31, 35, 49, 75, 93, 105, 147, 155, 175, 181, 217, 245, 465, 525, 543, 651, 735, 775, 905, 1085, 1225, 1267, 1519, 2325, 2715, 3255, 3675, 3801, 4525, 4557, 5425, 5611, 6335, 7595, 8869, 13575, 16275, 16833, 19005, 22785, 26607, 28055, 31675, 37975, 39277, 44345, 84165, 95025, 113925, 117831, 133035, 140275, 196385, 221725, 274939, 420825, 589155, 665175, 824817, 981925, 1374695, 2945775, 4124085, 6873475, 20620425]

約数ペア:

[(1, 20620425), (3, 6873475), (5, 4124085), (7, 2945775), (15, 1374695), (21, 981925), (25, 824817), (31, 665175), (35, 589155), (49, 420825), (75, 274939), (93, 221725), (105, 196385), (147, 140275), (155, 133035), (175, 117831), (181, 113925), (217, 95025), (245, 84165), (465, 44345), (525, 39277), (543, 37975), (651, 31675), (735, 28055), (775, 26607), (905, 22785), (1085, 19005), (1225, 16833), (1267, 16275), (1519, 13575), (2325, 8869), (2715, 7595), (3255, 6335), (3675, 5611), (3801, 5425), (4525, 4557)]