21417500

素因数分解:

$2^2\times 5^4\times {\mathrm{13}}^1\times {\mathrm{659}}^1$

素因数の和:696

約数の個数: 60

約数和(自身を含む): 50515080

約数和(自身を除く): 29097580

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 625, 650, 659, 1250, 1300, 1318, 1625, 2500, 2636, 3250, 3295, 6500, 6590, 8125, 8567, 13180, 16250, 16475, 17134, 32500, 32950, 34268, 42835, 65900, 82375, 85670, 164750, 171340, 214175, 329500, 411875, 428350, 823750, 856700, 1070875, 1647500, 2141750, 4283500, 5354375, 10708750, 21417500]

約数ペア:

[(1, 21417500), (2, 10708750), (4, 5354375), (5, 4283500), (10, 2141750), (13, 1647500), (20, 1070875), (25, 856700), (26, 823750), (50, 428350), (52, 411875), (65, 329500), (100, 214175), (125, 171340), (130, 164750), (250, 85670), (260, 82375), (325, 65900), (500, 42835), (625, 34268), (650, 32950), (659, 32500), (1250, 17134), (1300, 16475), (1318, 16250), (1625, 13180), (2500, 8567), (2636, 8125), (3250, 6590), (3295, 6500)]