209921000

素因数分解:

$2^3\times 5^3\times {\mathrm{23}}^1\times {\mathrm{9127}}^1$

素因数の和:9171

約数の個数: 64

約数和(自身を含む): 512628480

約数和(自身を除く): 302707480

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 125, 184, 200, 230, 250, 460, 500, 575, 920, 1000, 1150, 2300, 2875, 4600, 5750, 9127, 11500, 18254, 23000, 36508, 45635, 73016, 91270, 182540, 209921, 228175, 365080, 419842, 456350, 839684, 912700, 1049605, 1140875, 1679368, 1825400, 2099210, 2281750, 4198420, 4563500, 5248025, 8396840, 9127000, 10496050, 20992100, 26240125, 41984200, 52480250, 104960500, 209921000]

約数ペア:

[(1, 209921000), (2, 104960500), (4, 52480250), (5, 41984200), (8, 26240125), (10, 20992100), (20, 10496050), (23, 9127000), (25, 8396840), (40, 5248025), (46, 4563500), (50, 4198420), (92, 2281750), (100, 2099210), (115, 1825400), (125, 1679368), (184, 1140875), (200, 1049605), (230, 912700), (250, 839684), (460, 456350), (500, 419842), (575, 365080), (920, 228175), (1000, 209921), (1150, 182540), (2300, 91270), (2875, 73016), (4600, 45635), (5750, 36508), (9127, 23000), (11500, 18254)]