156816220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{8009}}^1$

素因数の和:8118

約数の個数: 48

約数和(自身を含む): 363333600

約数和(自身を除く): 206517380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1780, 1958, 3916, 4895, 8009, 9790, 16018, 19580, 32036, 40045, 80090, 88099, 160180, 176198, 352396, 440495, 712801, 880990, 1425602, 1761980, 2851204, 3564005, 7128010, 7840811, 14256020, 15681622, 31363244, 39204055, 78408110, 156816220]

約数ペア:

[(1, 156816220), (2, 78408110), (4, 39204055), (5, 31363244), (10, 15681622), (11, 14256020), (20, 7840811), (22, 7128010), (44, 3564005), (55, 2851204), (89, 1761980), (110, 1425602), (178, 880990), (220, 712801), (356, 440495), (445, 352396), (890, 176198), (979, 160180), (1780, 88099), (1958, 80090), (3916, 40045), (4895, 32036), (8009, 19580), (9790, 16018)]