400672660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{13241}}^1$

素因数の和:13356

約数の個数: 48

約数和(自身を含む): 900985680

約数和(自身を除く): 500313020

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 89, 170, 178, 340, 356, 445, 890, 1513, 1780, 3026, 6052, 7565, 13241, 15130, 26482, 30260, 52964, 66205, 132410, 225097, 264820, 450194, 900388, 1125485, 1178449, 2250970, 2356898, 4501940, 4713796, 5892245, 11784490, 20033633, 23568980, 40067266, 80134532, 100168165, 200336330, 400672660]

約数ペア:

[(1, 400672660), (2, 200336330), (4, 100168165), (5, 80134532), (10, 40067266), (17, 23568980), (20, 20033633), (34, 11784490), (68, 5892245), (85, 4713796), (89, 4501940), (170, 2356898), (178, 2250970), (340, 1178449), (356, 1125485), (445, 900388), (890, 450194), (1513, 264820), (1780, 225097), (3026, 132410), (6052, 66205), (7565, 52964), (13241, 30260), (15130, 26482)]