400044680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{229}}^1\times {\mathrm{367}}^1$

素因数の和:631

約数の個数: 128

約数和(自身を含む): 1096934400

約数和(自身を除く): 696889720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 229, 238, 280, 340, 367, 458, 476, 595, 680, 734, 916, 952, 1145, 1190, 1468, 1603, 1832, 1835, 2290, 2380, 2569, 2936, 3206, 3670, 3893, 4580, 4760, 5138, 6239, 6412, 7340, 7786, 8015, 9160, 10276, 12478, 12824, 12845, 14680, 15572, 16030, 19465, 20552, 24956, 25690, 27251, 31144, 31195, 32060, 38930, 43673, 49912, 51380, 54502, 62390, 64120, 77860, 84043, 87346, 102760, 109004, 124780, 136255, 155720, 168086, 174692, 218008, 218365, 249560, 272510, 336172, 349384, 420215, 436730, 545020, 588301, 672344, 840430, 873460, 1090040, 1176602, 1428731, 1680860, 1746920, 2353204, 2857462, 2941505, 3361720, 4706408, 5714924, 5883010, 7143655, 10001117, 11429848, 11766020, 14287310, 20002234, 23532040, 28574620, 40004468, 50005585, 57149240, 80008936, 100011170, 200022340, 400044680]

約数ペア:

[(1, 400044680), (2, 200022340), (4, 100011170), (5, 80008936), (7, 57149240), (8, 50005585), (10, 40004468), (14, 28574620), (17, 23532040), (20, 20002234), (28, 14287310), (34, 11766020), (35, 11429848), (40, 10001117), (56, 7143655), (68, 5883010), (70, 5714924), (85, 4706408), (119, 3361720), (136, 2941505), (140, 2857462), (170, 2353204), (229, 1746920), (238, 1680860), (280, 1428731), (340, 1176602), (367, 1090040), (458, 873460), (476, 840430), (595, 672344), (680, 588301), (734, 545020), (916, 436730), (952, 420215), (1145, 349384), (1190, 336172), (1468, 272510), (1603, 249560), (1832, 218365), (1835, 218008), (2290, 174692), (2380, 168086), (2569, 155720), (2936, 136255), (3206, 124780), (3670, 109004), (3893, 102760), (4580, 87346), (4760, 84043), (5138, 77860), (6239, 64120), (6412, 62390), (7340, 54502), (7786, 51380), (8015, 49912), (9160, 43673), (10276, 38930), (12478, 32060), (12824, 31195), (12845, 31144), (14680, 27251), (15572, 25690), (16030, 24956), (19465, 20552)]