20138763760

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{86477}}^1$

素因数の和:86602

約数の個数: 80

約数和(自身を含む): 48640761792

約数和(自身を除く): 28501998032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 71, 80, 82, 142, 164, 205, 284, 328, 355, 410, 568, 656, 710, 820, 1136, 1420, 1640, 2840, 2911, 3280, 5680, 5822, 11644, 14555, 23288, 29110, 46576, 58220, 86477, 116440, 172954, 232880, 345908, 432385, 691816, 864770, 1383632, 1729540, 3459080, 3545557, 6139867, 6918160, 7091114, 12279734, 14182228, 17727785, 24559468, 28364456, 30699335, 35455570, 49118936, 56728912, 61398670, 70911140, 98237872, 122797340, 141822280, 245594680, 251734547, 283644560, 491189360, 503469094, 1006938188, 1258672735, 2013876376, 2517345470, 4027752752, 5034690940, 10069381880, 20138763760]

約数ペア:

[(1, 20138763760), (2, 10069381880), (4, 5034690940), (5, 4027752752), (8, 2517345470), (10, 2013876376), (16, 1258672735), (20, 1006938188), (40, 503469094), (41, 491189360), (71, 283644560), (80, 251734547), (82, 245594680), (142, 141822280), (164, 122797340), (205, 98237872), (284, 70911140), (328, 61398670), (355, 56728912), (410, 49118936), (568, 35455570), (656, 30699335), (710, 28364456), (820, 24559468), (1136, 17727785), (1420, 14182228), (1640, 12279734), (2840, 7091114), (2911, 6918160), (3280, 6139867), (5680, 3545557), (5822, 3459080), (11644, 1729540), (14555, 1383632), (23288, 864770), (29110, 691816), (46576, 432385), (58220, 345908), (86477, 232880), (116440, 172954)]