20627120

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{523}}^1$

素因数の和:582

約数の個数: 80

約数和(自身を含む): 52630560

約数和(自身を除く): 32003440

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 29, 34, 40, 58, 68, 80, 85, 116, 136, 145, 170, 232, 272, 290, 340, 464, 493, 523, 580, 680, 986, 1046, 1160, 1360, 1972, 2092, 2320, 2465, 2615, 3944, 4184, 4930, 5230, 7888, 8368, 8891, 9860, 10460, 15167, 17782, 19720, 20920, 30334, 35564, 39440, 41840, 44455, 60668, 71128, 75835, 88910, 121336, 142256, 151670, 177820, 242672, 257839, 303340, 355640, 515678, 606680, 711280, 1031356, 1213360, 1289195, 2062712, 2578390, 4125424, 5156780, 10313560, 20627120]

約数ペア:

[(1, 20627120), (2, 10313560), (4, 5156780), (5, 4125424), (8, 2578390), (10, 2062712), (16, 1289195), (17, 1213360), (20, 1031356), (29, 711280), (34, 606680), (40, 515678), (58, 355640), (68, 303340), (80, 257839), (85, 242672), (116, 177820), (136, 151670), (145, 142256), (170, 121336), (232, 88910), (272, 75835), (290, 71128), (340, 60668), (464, 44455), (493, 41840), (523, 39440), (580, 35564), (680, 30334), (986, 20920), (1046, 19720), (1160, 17782), (1360, 15167), (1972, 10460), (2092, 9860), (2320, 8891), (2465, 8368), (2615, 7888), (3944, 5230), (4184, 4930)]