25277780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1291}}^1$

素因数の和:1400

約数の個数: 48

約数和(自身を含む): 58605120

約数和(自身を除く): 33327340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1291, 1780, 1958, 2582, 3916, 4895, 5164, 6455, 9790, 12910, 14201, 19580, 25820, 28402, 56804, 71005, 114899, 142010, 229798, 284020, 459596, 574495, 1148990, 1263889, 2297980, 2527778, 5055556, 6319445, 12638890, 25277780]

約数ペア:

[(1, 25277780), (2, 12638890), (4, 6319445), (5, 5055556), (10, 2527778), (11, 2297980), (20, 1263889), (22, 1148990), (44, 574495), (55, 459596), (89, 284020), (110, 229798), (178, 142010), (220, 114899), (356, 71005), (445, 56804), (890, 28402), (979, 25820), (1291, 19580), (1780, 14201), (1958, 12910), (2582, 9790), (3916, 6455), (4895, 5164)]