17995000

素因数分解:

$2^3\times 5^4\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:146

約数の個数: 80

約数和(自身を含む): 43579800

約数和(自身を除く): 25584800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 59, 61, 100, 118, 122, 125, 200, 236, 244, 250, 295, 305, 472, 488, 500, 590, 610, 625, 1000, 1180, 1220, 1250, 1475, 1525, 2360, 2440, 2500, 2950, 3050, 3599, 5000, 5900, 6100, 7198, 7375, 7625, 11800, 12200, 14396, 14750, 15250, 17995, 28792, 29500, 30500, 35990, 36875, 38125, 59000, 61000, 71980, 73750, 76250, 89975, 143960, 147500, 152500, 179950, 295000, 305000, 359900, 449875, 719800, 899750, 1799500, 2249375, 3599000, 4498750, 8997500, 17995000]

約数ペア:

[(1, 17995000), (2, 8997500), (4, 4498750), (5, 3599000), (8, 2249375), (10, 1799500), (20, 899750), (25, 719800), (40, 449875), (50, 359900), (59, 305000), (61, 295000), (100, 179950), (118, 152500), (122, 147500), (125, 143960), (200, 89975), (236, 76250), (244, 73750), (250, 71980), (295, 61000), (305, 59000), (472, 38125), (488, 36875), (500, 35990), (590, 30500), (610, 29500), (625, 28792), (1000, 17995), (1180, 15250), (1220, 14750), (1250, 14396), (1475, 12200), (1525, 11800), (2360, 7625), (2440, 7375), (2500, 7198), (2950, 6100), (3050, 5900), (3599, 5000)]