221279120

素因数分解:

$2^4\times 5^1\times {\mathrm{521}}^1\times {\mathrm{5309}}^1$

素因数の和:5843

約数の個数: 40

約数和(自身を含む): 515558520

約数和(自身を除く): 294279400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 521, 1042, 2084, 2605, 4168, 5210, 5309, 8336, 10420, 10618, 20840, 21236, 26545, 41680, 42472, 53090, 84944, 106180, 212360, 424720, 2765989, 5531978, 11063956, 13829945, 22127912, 27659890, 44255824, 55319780, 110639560, 221279120]

約数ペア:

[(1, 221279120), (2, 110639560), (4, 55319780), (5, 44255824), (8, 27659890), (10, 22127912), (16, 13829945), (20, 11063956), (40, 5531978), (80, 2765989), (521, 424720), (1042, 212360), (2084, 106180), (2605, 84944), (4168, 53090), (5210, 42472), (5309, 41680), (8336, 26545), (10420, 21236), (10618, 20840)]