320171920

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{65609}}^1$

素因数の和:65683

約数の個数: 40

約数和(自身を含む): 756614520

約数和(自身を除く): 436442600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 65609, 131218, 262436, 328045, 524872, 656090, 1049744, 1312180, 2624360, 4002149, 5248720, 8004298, 16008596, 20010745, 32017192, 40021490, 64034384, 80042980, 160085960, 320171920]

約数ペア:

[(1, 320171920), (2, 160085960), (4, 80042980), (5, 64034384), (8, 40021490), (10, 32017192), (16, 20010745), (20, 16008596), (40, 8004298), (61, 5248720), (80, 4002149), (122, 2624360), (244, 1312180), (305, 1049744), (488, 656090), (610, 524872), (976, 328045), (1220, 262436), (2440, 131218), (4880, 65609)]