217871355

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{30197}}^1$

素因数の和:30255

約数の個数: 32

約数和(自身を含む): 385568064

約数和(自身を除く): 167696709

約数列:

[1, 3, 5, 13, 15, 37, 39, 65, 111, 185, 195, 481, 555, 1443, 2405, 7215, 30197, 90591, 150985, 392561, 452955, 1117289, 1177683, 1962805, 3351867, 5586445, 5888415, 14524757, 16759335, 43574271, 72623785, 217871355]

約数ペア:

[(1, 217871355), (3, 72623785), (5, 43574271), (13, 16759335), (15, 14524757), (37, 5888415), (39, 5586445), (65, 3351867), (111, 1962805), (185, 1177683), (195, 1117289), (481, 452955), (555, 392561), (1443, 150985), (2405, 90591), (7215, 30197)]