20121426416

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{53773}}^1$

素因数の和:54058

約数の個数: 80

約数和(自身を含む): 48169458624

約数和(自身を除く): 28048032208

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 257, 364, 514, 728, 1028, 1456, 1799, 2056, 3341, 3598, 4112, 6682, 7196, 13364, 14392, 23387, 26728, 28784, 46774, 53456, 53773, 93548, 107546, 187096, 215092, 374192, 376411, 430184, 699049, 752822, 860368, 1398098, 1505644, 2796196, 3011288, 4893343, 5592392, 6022576, 9786686, 11184784, 13819661, 19573372, 27639322, 39146744, 55278644, 78293488, 96737627, 110557288, 179655593, 193475254, 221114576, 359311186, 386950508, 718622372, 773901016, 1257589151, 1437244744, 1547802032, 2515178302, 2874489488, 5030356604, 10060713208, 20121426416]

約数ペア:

[(1, 20121426416), (2, 10060713208), (4, 5030356604), (7, 2874489488), (8, 2515178302), (13, 1547802032), (14, 1437244744), (16, 1257589151), (26, 773901016), (28, 718622372), (52, 386950508), (56, 359311186), (91, 221114576), (104, 193475254), (112, 179655593), (182, 110557288), (208, 96737627), (257, 78293488), (364, 55278644), (514, 39146744), (728, 27639322), (1028, 19573372), (1456, 13819661), (1799, 11184784), (2056, 9786686), (3341, 6022576), (3598, 5592392), (4112, 4893343), (6682, 3011288), (7196, 2796196), (13364, 1505644), (14392, 1398098), (23387, 860368), (26728, 752822), (28784, 699049), (46774, 430184), (53456, 376411), (53773, 374192), (93548, 215092), (107546, 187096)]