216204940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{21751}}^1$

素因数の和:21838

約数の個数: 48

約数和(自身を含む): 526224384

約数和(自身を除く): 310019444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 21751, 43502, 87004, 108755, 152257, 217510, 304514, 435020, 609028, 761285, 1522570, 1544321, 3045140, 3088642, 6177284, 7721605, 10810247, 15443210, 21620494, 30886420, 43240988, 54051235, 108102470, 216204940]

約数ペア:

[(1, 216204940), (2, 108102470), (4, 54051235), (5, 43240988), (7, 30886420), (10, 21620494), (14, 15443210), (20, 10810247), (28, 7721605), (35, 6177284), (70, 3088642), (71, 3045140), (140, 1544321), (142, 1522570), (284, 761285), (355, 609028), (497, 435020), (710, 304514), (994, 217510), (1420, 152257), (1988, 108755), (2485, 87004), (4970, 43502), (9940, 21751)]