21080008

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{599}}^1$

素因数の和:741

約数の個数: 32

約数和(自身を含む): 40824000

約数和(自身を除く): 19743992

約数列:

[1, 2, 4, 8, 53, 83, 106, 166, 212, 332, 424, 599, 664, 1198, 2396, 4399, 4792, 8798, 17596, 31747, 35192, 49717, 63494, 99434, 126988, 198868, 253976, 397736, 2635001, 5270002, 10540004, 21080008]

約数ペア:

[(1, 21080008), (2, 10540004), (4, 5270002), (8, 2635001), (53, 397736), (83, 253976), (106, 198868), (166, 126988), (212, 99434), (332, 63494), (424, 49717), (599, 35192), (664, 31747), (1198, 17596), (2396, 8798), (4399, 4792)]