20167945940

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1\times {\mathrm{293}}^1\times {\mathrm{487}}^1$

素因数の和:1017

約数の個数: 96

約数和(自身を含む): 43964411904

約数和(自身を除く): 23796465964

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 191, 293, 370, 382, 487, 586, 740, 764, 955, 974, 1172, 1465, 1910, 1948, 2435, 2930, 3820, 4870, 5860, 7067, 9740, 10841, 14134, 18019, 21682, 28268, 35335, 36038, 43364, 54205, 55963, 70670, 72076, 90095, 93017, 108410, 111926, 141340, 142691, 180190, 186034, 216820, 223852, 279815, 285382, 360380, 372068, 465085, 559630, 570764, 713455, 930170, 1119260, 1426910, 1860340, 2070631, 2853820, 3441629, 4141262, 5279567, 6883258, 8282524, 10353155, 10559134, 13766516, 17208145, 20706310, 21118268, 26397835, 27253981, 34416290, 41412620, 52795670, 54507962, 68832580, 105591340, 109015924, 136269905, 272539810, 545079620, 1008397297, 2016794594, 4033589188, 5041986485, 10083972970, 20167945940]

約数ペア:

[(1, 20167945940), (2, 10083972970), (4, 5041986485), (5, 4033589188), (10, 2016794594), (20, 1008397297), (37, 545079620), (74, 272539810), (148, 136269905), (185, 109015924), (191, 105591340), (293, 68832580), (370, 54507962), (382, 52795670), (487, 41412620), (586, 34416290), (740, 27253981), (764, 26397835), (955, 21118268), (974, 20706310), (1172, 17208145), (1465, 13766516), (1910, 10559134), (1948, 10353155), (2435, 8282524), (2930, 6883258), (3820, 5279567), (4870, 4141262), (5860, 3441629), (7067, 2853820), (9740, 2070631), (10841, 1860340), (14134, 1426910), (18019, 1119260), (21682, 930170), (28268, 713455), (35335, 570764), (36038, 559630), (43364, 465085), (54205, 372068), (55963, 360380), (70670, 285382), (72076, 279815), (90095, 223852), (93017, 216820), (108410, 186034), (111926, 180190), (141340, 142691)]