20371440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{4993}}^1$

素因数の和:5026

約数の個数: 80

約数和(自身を含む): 66879648

約数和(自身を除く): 46508208

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 4993, 9986, 14979, 19972, 24965, 29958, 39944, 49930, 59916, 74895, 79888, 84881, 99860, 119832, 149790, 169762, 199720, 239664, 254643, 299580, 339524, 399440, 424405, 509286, 599160, 679048, 848810, 1018572, 1198320, 1273215, 1358096, 1697620, 2037144, 2546430, 3395240, 4074288, 5092860, 6790480, 10185720, 20371440]

約数ペア:

[(1, 20371440), (2, 10185720), (3, 6790480), (4, 5092860), (5, 4074288), (6, 3395240), (8, 2546430), (10, 2037144), (12, 1697620), (15, 1358096), (16, 1273215), (17, 1198320), (20, 1018572), (24, 848810), (30, 679048), (34, 599160), (40, 509286), (48, 424405), (51, 399440), (60, 339524), (68, 299580), (80, 254643), (85, 239664), (102, 199720), (120, 169762), (136, 149790), (170, 119832), (204, 99860), (240, 84881), (255, 79888), (272, 74895), (340, 59916), (408, 49930), (510, 39944), (680, 29958), (816, 24965), (1020, 19972), (1360, 14979), (2040, 9986), (4080, 4993)]