20164025720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{223}}^1\times {\mathrm{1291}}^1$

素因数の和:1645

約数の個数: 128

約数和(自身を含む): 48759459840

約数和(自身を除く): 28595434120

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 103, 136, 170, 206, 223, 340, 412, 446, 515, 680, 824, 892, 1030, 1115, 1291, 1751, 1784, 2060, 2230, 2582, 3502, 3791, 4120, 4460, 5164, 6455, 7004, 7582, 8755, 8920, 10328, 12910, 14008, 15164, 17510, 18955, 21947, 22969, 25820, 30328, 35020, 37910, 43894, 45938, 51640, 70040, 75820, 87788, 91876, 109735, 114845, 132973, 151640, 175576, 183752, 219470, 229690, 265946, 287893, 390473, 438940, 459380, 531892, 575786, 664865, 780946, 877880, 918760, 1063784, 1151572, 1329730, 1439465, 1561892, 1952365, 2260541, 2303144, 2659460, 2878930, 3123784, 3904730, 4521082, 4894181, 5318920, 5757860, 7809460, 9042164, 9788362, 11302705, 11515720, 15618920, 18084328, 19576724, 22605410, 24470905, 29652979, 39153448, 45210820, 48941810, 59305958, 90421640, 97883620, 118611916, 148264895, 195767240, 237223832, 296529790, 504100643, 593059580, 1008201286, 1186119160, 2016402572, 2520503215, 4032805144, 5041006430, 10082012860, 20164025720]

約数ペア:

[(1, 20164025720), (2, 10082012860), (4, 5041006430), (5, 4032805144), (8, 2520503215), (10, 2016402572), (17, 1186119160), (20, 1008201286), (34, 593059580), (40, 504100643), (68, 296529790), (85, 237223832), (103, 195767240), (136, 148264895), (170, 118611916), (206, 97883620), (223, 90421640), (340, 59305958), (412, 48941810), (446, 45210820), (515, 39153448), (680, 29652979), (824, 24470905), (892, 22605410), (1030, 19576724), (1115, 18084328), (1291, 15618920), (1751, 11515720), (1784, 11302705), (2060, 9788362), (2230, 9042164), (2582, 7809460), (3502, 5757860), (3791, 5318920), (4120, 4894181), (4460, 4521082), (5164, 3904730), (6455, 3123784), (7004, 2878930), (7582, 2659460), (8755, 2303144), (8920, 2260541), (10328, 1952365), (12910, 1561892), (14008, 1439465), (15164, 1329730), (17510, 1151572), (18955, 1063784), (21947, 918760), (22969, 877880), (25820, 780946), (30328, 664865), (35020, 575786), (37910, 531892), (43894, 459380), (45938, 438940), (51640, 390473), (70040, 287893), (75820, 265946), (87788, 229690), (91876, 219470), (109735, 183752), (114845, 175576), (132973, 151640)]