408057880

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1\times {\mathrm{1381}}^1$

素因数の和:1564

約数の個数: 64

約数和(自身を含む): 940312800

約数和(自身を除く): 532254920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 89, 166, 178, 332, 356, 415, 445, 664, 712, 830, 890, 1381, 1660, 1780, 2762, 3320, 3560, 5524, 6905, 7387, 11048, 13810, 14774, 27620, 29548, 36935, 55240, 59096, 73870, 114623, 122909, 147740, 229246, 245818, 295480, 458492, 491636, 573115, 614545, 916984, 983272, 1146230, 1229090, 2292460, 2458180, 4584920, 4916360, 10201447, 20402894, 40805788, 51007235, 81611576, 102014470, 204028940, 408057880]

約数ペア:

[(1, 408057880), (2, 204028940), (4, 102014470), (5, 81611576), (8, 51007235), (10, 40805788), (20, 20402894), (40, 10201447), (83, 4916360), (89, 4584920), (166, 2458180), (178, 2292460), (332, 1229090), (356, 1146230), (415, 983272), (445, 916984), (664, 614545), (712, 573115), (830, 491636), (890, 458492), (1381, 295480), (1660, 245818), (1780, 229246), (2762, 147740), (3320, 122909), (3560, 114623), (5524, 73870), (6905, 59096), (7387, 55240), (11048, 36935), (13810, 29548), (14774, 27620)]