255923668

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{397}}^1$

素因数の和:462

約数の個数: 144

約数和(自身を含む): 640289664

約数和(自身を除く): 384365996

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 23, 26, 28, 44, 46, 49, 52, 77, 91, 92, 98, 143, 154, 161, 182, 196, 253, 286, 299, 308, 322, 364, 397, 506, 539, 572, 598, 637, 644, 794, 1001, 1012, 1078, 1127, 1196, 1274, 1588, 1771, 2002, 2093, 2156, 2254, 2548, 2779, 3289, 3542, 4004, 4186, 4367, 4508, 5161, 5558, 6578, 7007, 7084, 8372, 8734, 9131, 10322, 11116, 12397, 13156, 14014, 14651, 17468, 18262, 19453, 20644, 23023, 24794, 28028, 29302, 30569, 36127, 36524, 38906, 46046, 49588, 56771, 58604, 61138, 63917, 72254, 77812, 92092, 100441, 113542, 118703, 122276, 127834, 144508, 161161, 200882, 213983, 227084, 237406, 252889, 255668, 322322, 397397, 401764, 427966, 447419, 474812, 505778, 644644, 703087, 794794, 830921, 855932, 894838, 1011556, 1305733, 1406174, 1589588, 1661842, 1789676, 2611466, 2781779, 2812348, 3323684, 4921609, 5222932, 5563558, 5816447, 9140131, 9843218, 11127116, 11632894, 18280262, 19686436, 23265788, 36560524, 63980917, 127961834, 255923668]

約数ペア:

[(1, 255923668), (2, 127961834), (4, 63980917), (7, 36560524), (11, 23265788), (13, 19686436), (14, 18280262), (22, 11632894), (23, 11127116), (26, 9843218), (28, 9140131), (44, 5816447), (46, 5563558), (49, 5222932), (52, 4921609), (77, 3323684), (91, 2812348), (92, 2781779), (98, 2611466), (143, 1789676), (154, 1661842), (161, 1589588), (182, 1406174), (196, 1305733), (253, 1011556), (286, 894838), (299, 855932), (308, 830921), (322, 794794), (364, 703087), (397, 644644), (506, 505778), (539, 474812), (572, 447419), (598, 427966), (637, 401764), (644, 397397), (794, 322322), (1001, 255668), (1012, 252889), (1078, 237406), (1127, 227084), (1196, 213983), (1274, 200882), (1588, 161161), (1771, 144508), (2002, 127834), (2093, 122276), (2156, 118703), (2254, 113542), (2548, 100441), (2779, 92092), (3289, 77812), (3542, 72254), (4004, 63917), (4186, 61138), (4367, 58604), (4508, 56771), (5161, 49588), (5558, 46046), (6578, 38906), (7007, 36524), (7084, 36127), (8372, 30569), (8734, 29302), (9131, 28028), (10322, 24794), (11116, 23023), (12397, 20644), (13156, 19453), (14014, 18262), (14651, 17468)]