21683960

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{6091}}^1$

素因数の和:6191

約数の個数: 32

約数和(自身を含む): 49345200

約数和(自身を除く): 27661240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 6091, 12182, 24364, 30455, 48728, 60910, 121820, 243640, 542099, 1084198, 2168396, 2710495, 4336792, 5420990, 10841980, 21683960]

約数ペア:

[(1, 21683960), (2, 10841980), (4, 5420990), (5, 4336792), (8, 2710495), (10, 2168396), (20, 1084198), (40, 542099), (89, 243640), (178, 121820), (356, 60910), (445, 48728), (712, 30455), (890, 24364), (1780, 12182), (3560, 6091)]