21671260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4903}}^1$

素因数の和:4942

約数の個数: 48

約数和(自身を含む): 51903936

約数和(自身を除く): 30232676

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 4903, 9806, 19612, 24515, 49030, 63739, 83351, 98060, 127478, 166702, 254956, 318695, 333404, 416755, 637390, 833510, 1083563, 1274780, 1667020, 2167126, 4334252, 5417815, 10835630, 21671260]

約数ペア:

[(1, 21671260), (2, 10835630), (4, 5417815), (5, 4334252), (10, 2167126), (13, 1667020), (17, 1274780), (20, 1083563), (26, 833510), (34, 637390), (52, 416755), (65, 333404), (68, 318695), (85, 254956), (130, 166702), (170, 127478), (221, 98060), (260, 83351), (340, 63739), (442, 49030), (884, 24515), (1105, 19612), (2210, 9806), (4420, 4903)]