21705642

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{5557}}^1$

素因数の和:5603

約数の個数: 48

約数和(自身を含む): 55491072

約数和(自身を除く): 33785430

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 31, 42, 62, 63, 93, 126, 186, 217, 279, 434, 558, 651, 1302, 1953, 3906, 5557, 11114, 16671, 33342, 38899, 50013, 77798, 100026, 116697, 172267, 233394, 344534, 350091, 516801, 700182, 1033602, 1205869, 1550403, 2411738, 3100806, 3617607, 7235214, 10852821, 21705642]

約数ペア:

[(1, 21705642), (2, 10852821), (3, 7235214), (6, 3617607), (7, 3100806), (9, 2411738), (14, 1550403), (18, 1205869), (21, 1033602), (31, 700182), (42, 516801), (62, 350091), (63, 344534), (93, 233394), (126, 172267), (186, 116697), (217, 100026), (279, 77798), (434, 50013), (558, 38899), (651, 33342), (1302, 16671), (1953, 11114), (3906, 5557)]