20120204432

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{947}}^1\times {\mathrm{1487}}^1$

素因数の和:2508

約数の個数: 80

約数和(自身を含む): 41980170240

約数和(自身を除く): 21859965808

約数列:

[1, 2, 4, 8, 16, 19, 38, 47, 76, 94, 152, 188, 304, 376, 752, 893, 947, 1487, 1786, 1894, 2974, 3572, 3788, 5948, 7144, 7576, 11896, 14288, 15152, 17993, 23792, 28253, 35986, 44509, 56506, 69889, 71972, 89018, 113012, 139778, 143944, 178036, 226024, 279556, 287888, 356072, 452048, 559112, 712144, 845671, 1118224, 1327891, 1408189, 1691342, 2655782, 2816378, 3382684, 5311564, 5632756, 6765368, 10623128, 11265512, 13530736, 21246256, 22531024, 26755591, 53511182, 66184883, 107022364, 132369766, 214044728, 264739532, 428089456, 529479064, 1058958128, 1257512777, 2515025554, 5030051108, 10060102216, 20120204432]

約数ペア:

[(1, 20120204432), (2, 10060102216), (4, 5030051108), (8, 2515025554), (16, 1257512777), (19, 1058958128), (38, 529479064), (47, 428089456), (76, 264739532), (94, 214044728), (152, 132369766), (188, 107022364), (304, 66184883), (376, 53511182), (752, 26755591), (893, 22531024), (947, 21246256), (1487, 13530736), (1786, 11265512), (1894, 10623128), (2974, 6765368), (3572, 5632756), (3788, 5311564), (5948, 3382684), (7144, 2816378), (7576, 2655782), (11896, 1691342), (14288, 1408189), (15152, 1327891), (17993, 1118224), (23792, 845671), (28253, 712144), (35986, 559112), (44509, 452048), (56506, 356072), (69889, 287888), (71972, 279556), (89018, 226024), (113012, 178036), (139778, 143944)]