20956425

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{179}}^1\times {\mathrm{223}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 39997440

約数和(自身を除く): 19041015

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175, 179, 223, 525, 537, 669, 895, 1115, 1253, 1561, 2685, 3345, 3759, 4475, 4683, 5575, 6265, 7805, 13425, 16725, 18795, 23415, 31325, 39025, 39917, 93975, 117075, 119751, 199585, 279419, 598755, 838257, 997925, 1397095, 2993775, 4191285, 6985475, 20956425]

約数ペア:

[(1, 20956425), (3, 6985475), (5, 4191285), (7, 2993775), (15, 1397095), (21, 997925), (25, 838257), (35, 598755), (75, 279419), (105, 199585), (175, 119751), (179, 117075), (223, 93975), (525, 39917), (537, 39025), (669, 31325), (895, 23415), (1115, 18795), (1253, 16725), (1561, 13425), (2685, 7805), (3345, 6265), (3759, 5575), (4475, 4683)]