28931960

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{271}}^1$

素因数の和:456

約数の個数: 64

約数和(自身を含む): 69621120

約数和(自身を除く): 40689160

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 157, 170, 271, 314, 340, 542, 628, 680, 785, 1084, 1256, 1355, 1570, 2168, 2669, 2710, 3140, 4607, 5338, 5420, 6280, 9214, 10676, 10840, 13345, 18428, 21352, 23035, 26690, 36856, 42547, 46070, 53380, 85094, 92140, 106760, 170188, 184280, 212735, 340376, 425470, 723299, 850940, 1446598, 1701880, 2893196, 3616495, 5786392, 7232990, 14465980, 28931960]

約数ペア:

[(1, 28931960), (2, 14465980), (4, 7232990), (5, 5786392), (8, 3616495), (10, 2893196), (17, 1701880), (20, 1446598), (34, 850940), (40, 723299), (68, 425470), (85, 340376), (136, 212735), (157, 184280), (170, 170188), (271, 106760), (314, 92140), (340, 85094), (542, 53380), (628, 46070), (680, 42547), (785, 36856), (1084, 26690), (1256, 23035), (1355, 21352), (1570, 18428), (2168, 13345), (2669, 10840), (2710, 10676), (3140, 9214), (4607, 6280), (5338, 5420)]