20393625

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{457}}^1$

素因数の和:499

約数の個数: 64

約数和(自身を含む): 41154048

約数和(自身を除く): 20760423

約数列:

[1, 3, 5, 7, 15, 17, 21, 25, 35, 51, 75, 85, 105, 119, 125, 175, 255, 357, 375, 425, 457, 525, 595, 875, 1275, 1371, 1785, 2125, 2285, 2625, 2975, 3199, 6375, 6855, 7769, 8925, 9597, 11425, 14875, 15995, 23307, 34275, 38845, 44625, 47985, 54383, 57125, 79975, 116535, 163149, 171375, 194225, 239925, 271915, 399875, 582675, 815745, 971125, 1199625, 1359575, 2913375, 4078725, 6797875, 20393625]

約数ペア:

[(1, 20393625), (3, 6797875), (5, 4078725), (7, 2913375), (15, 1359575), (17, 1199625), (21, 971125), (25, 815745), (35, 582675), (51, 399875), (75, 271915), (85, 239925), (105, 194225), (119, 171375), (125, 163149), (175, 116535), (255, 79975), (357, 57125), (375, 54383), (425, 47985), (457, 44625), (525, 38845), (595, 34275), (875, 23307), (1275, 15995), (1371, 14875), (1785, 11425), (2125, 9597), (2285, 8925), (2625, 7769), (2975, 6855), (3199, 6375)]