21398000

素因数分解:

$2^4\times 5^3\times {\mathrm{13}}^1\times {\mathrm{823}}^1$

素因数の和:859

約数の個数: 80

約数和(自身を含む): 55788096

約数和(自身を除く): 34390096

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 125, 130, 200, 208, 250, 260, 325, 400, 500, 520, 650, 823, 1000, 1040, 1300, 1625, 1646, 2000, 2600, 3250, 3292, 4115, 5200, 6500, 6584, 8230, 10699, 13000, 13168, 16460, 20575, 21398, 26000, 32920, 41150, 42796, 53495, 65840, 82300, 85592, 102875, 106990, 164600, 171184, 205750, 213980, 267475, 329200, 411500, 427960, 534950, 823000, 855920, 1069900, 1337375, 1646000, 2139800, 2674750, 4279600, 5349500, 10699000, 21398000]

約数ペア:

[(1, 21398000), (2, 10699000), (4, 5349500), (5, 4279600), (8, 2674750), (10, 2139800), (13, 1646000), (16, 1337375), (20, 1069900), (25, 855920), (26, 823000), (40, 534950), (50, 427960), (52, 411500), (65, 329200), (80, 267475), (100, 213980), (104, 205750), (125, 171184), (130, 164600), (200, 106990), (208, 102875), (250, 85592), (260, 82300), (325, 65840), (400, 53495), (500, 42796), (520, 41150), (650, 32920), (823, 26000), (1000, 21398), (1040, 20575), (1300, 16460), (1625, 13168), (1646, 13000), (2000, 10699), (2600, 8230), (3250, 6584), (3292, 6500), (4115, 5200)]