189990000004

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{379}}^1\times {\mathrm{2311}}^1$

素因数の和:2889

約数の個数: 96

約数和(自身を含む): 390446120960

約数和(自身を除く): 200456120956

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 127, 244, 254, 379, 427, 508, 758, 854, 889, 1516, 1708, 1778, 2311, 2653, 3556, 4622, 5306, 7747, 9244, 10612, 15494, 16177, 23119, 30988, 32354, 46238, 48133, 54229, 64708, 92476, 96266, 108458, 140971, 161833, 192532, 216916, 281942, 293497, 323666, 336931, 563884, 586994, 647332, 673862, 875869, 986797, 1173988, 1347724, 1751738, 1973594, 2054479, 2936113, 3503476, 3947188, 4108958, 5872226, 6131083, 8217916, 11744452, 12262166, 17903317, 20552791, 24524332, 35806634, 41105582, 53428009, 71613268, 82211164, 106856018, 111235363, 125323219, 213712036, 222470726, 250646438, 373996063, 444941452, 501292876, 747992126, 778647541, 1495984252, 1557295082, 3114590164, 6785357143, 13570714286, 27141428572, 47497500001, 94995000002, 189990000004]

約数ペア:

[(1, 189990000004), (2, 94995000002), (4, 47497500001), (7, 27141428572), (14, 13570714286), (28, 6785357143), (61, 3114590164), (122, 1557295082), (127, 1495984252), (244, 778647541), (254, 747992126), (379, 501292876), (427, 444941452), (508, 373996063), (758, 250646438), (854, 222470726), (889, 213712036), (1516, 125323219), (1708, 111235363), (1778, 106856018), (2311, 82211164), (2653, 71613268), (3556, 53428009), (4622, 41105582), (5306, 35806634), (7747, 24524332), (9244, 20552791), (10612, 17903317), (15494, 12262166), (16177, 11744452), (23119, 8217916), (30988, 6131083), (32354, 5872226), (46238, 4108958), (48133, 3947188), (54229, 3503476), (64708, 2936113), (92476, 2054479), (96266, 1973594), (108458, 1751738), (140971, 1347724), (161833, 1173988), (192532, 986797), (216916, 875869), (281942, 673862), (293497, 647332), (323666, 586994), (336931, 563884)]