21164360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{577}}^1$

素因数の和:726

約数の個数: 64

約数和(自身を含む): 54933120

約数和(自身を除く): 33768760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 131, 140, 262, 280, 524, 577, 655, 917, 1048, 1154, 1310, 1834, 2308, 2620, 2885, 3668, 4039, 4585, 4616, 5240, 5770, 7336, 8078, 9170, 11540, 16156, 18340, 20195, 23080, 32312, 36680, 40390, 75587, 80780, 151174, 161560, 302348, 377935, 529109, 604696, 755870, 1058218, 1511740, 2116436, 2645545, 3023480, 4232872, 5291090, 10582180, 21164360]

約数ペア:

[(1, 21164360), (2, 10582180), (4, 5291090), (5, 4232872), (7, 3023480), (8, 2645545), (10, 2116436), (14, 1511740), (20, 1058218), (28, 755870), (35, 604696), (40, 529109), (56, 377935), (70, 302348), (131, 161560), (140, 151174), (262, 80780), (280, 75587), (524, 40390), (577, 36680), (655, 32312), (917, 23080), (1048, 20195), (1154, 18340), (1310, 16156), (1834, 11540), (2308, 9170), (2620, 8078), (2885, 7336), (3668, 5770), (4039, 5240), (4585, 4616)]