21522940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{659}}^1$

素因数の和:762

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 26377220

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 71, 92, 115, 142, 230, 284, 355, 460, 659, 710, 1318, 1420, 1633, 2636, 3266, 3295, 6532, 6590, 8165, 13180, 15157, 16330, 30314, 32660, 46789, 60628, 75785, 93578, 151570, 187156, 233945, 303140, 467890, 935780, 1076147, 2152294, 4304588, 5380735, 10761470, 21522940]

約数ペア:

[(1, 21522940), (2, 10761470), (4, 5380735), (5, 4304588), (10, 2152294), (20, 1076147), (23, 935780), (46, 467890), (71, 303140), (92, 233945), (115, 187156), (142, 151570), (230, 93578), (284, 75785), (355, 60628), (460, 46789), (659, 32660), (710, 30314), (1318, 16330), (1420, 15157), (1633, 13180), (2636, 8165), (3266, 6590), (3295, 6532)]