4131380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 9616320

約数和(自身を除く): 5484940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 211, 220, 356, 422, 445, 844, 890, 979, 1055, 1780, 1958, 2110, 2321, 3916, 4220, 4642, 4895, 9284, 9790, 11605, 18779, 19580, 23210, 37558, 46420, 75116, 93895, 187790, 206569, 375580, 413138, 826276, 1032845, 2065690, 4131380]

約数ペア:

[(1, 4131380), (2, 2065690), (4, 1032845), (5, 826276), (10, 413138), (11, 375580), (20, 206569), (22, 187790), (44, 93895), (55, 75116), (89, 46420), (110, 37558), (178, 23210), (211, 19580), (220, 18779), (356, 11605), (422, 9790), (445, 9284), (844, 4895), (890, 4642), (979, 4220), (1055, 3916), (1780, 2321), (1958, 2110)]