77881000

素因数分解:

$2^3\times 5^3\times {\mathrm{19}}^1\times {\mathrm{4099}}^1$

素因数の和:4139

約数の個数: 64

約数和(自身を含む): 191880000

約数和(自身を除く): 113999000

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 125, 152, 190, 200, 250, 380, 475, 500, 760, 950, 1000, 1900, 2375, 3800, 4099, 4750, 8198, 9500, 16396, 19000, 20495, 32792, 40990, 77881, 81980, 102475, 155762, 163960, 204950, 311524, 389405, 409900, 512375, 623048, 778810, 819800, 1024750, 1557620, 1947025, 2049500, 3115240, 3894050, 4099000, 7788100, 9735125, 15576200, 19470250, 38940500, 77881000]

約数ペア:

[(1, 77881000), (2, 38940500), (4, 19470250), (5, 15576200), (8, 9735125), (10, 7788100), (19, 4099000), (20, 3894050), (25, 3115240), (38, 2049500), (40, 1947025), (50, 1557620), (76, 1024750), (95, 819800), (100, 778810), (125, 623048), (152, 512375), (190, 409900), (200, 389405), (250, 311524), (380, 204950), (475, 163960), (500, 155762), (760, 102475), (950, 81980), (1000, 77881), (1900, 40990), (2375, 32792), (3800, 20495), (4099, 19000), (4750, 16396), (8198, 9500)]