78811600

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{4021}}^1$

素因数の和:4053

約数の個数: 90

約数和(自身を含む): 220313094

約数和(自身を除く): 141501494

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 140, 175, 196, 200, 245, 280, 350, 392, 400, 490, 560, 700, 784, 980, 1225, 1400, 1960, 2450, 2800, 3920, 4021, 4900, 8042, 9800, 16084, 19600, 20105, 28147, 32168, 40210, 56294, 64336, 80420, 100525, 112588, 140735, 160840, 197029, 201050, 225176, 281470, 321680, 394058, 402100, 450352, 562940, 703675, 788116, 804200, 985145, 1125880, 1407350, 1576232, 1608400, 1970290, 2251760, 2814700, 3152464, 3940580, 4925725, 5629400, 7881160, 9851450, 11258800, 15762320, 19702900, 39405800, 78811600]

約数ペア:

[(1, 78811600), (2, 39405800), (4, 19702900), (5, 15762320), (7, 11258800), (8, 9851450), (10, 7881160), (14, 5629400), (16, 4925725), (20, 3940580), (25, 3152464), (28, 2814700), (35, 2251760), (40, 1970290), (49, 1608400), (50, 1576232), (56, 1407350), (70, 1125880), (80, 985145), (98, 804200), (100, 788116), (112, 703675), (140, 562940), (175, 450352), (196, 402100), (200, 394058), (245, 321680), (280, 281470), (350, 225176), (392, 201050), (400, 197029), (490, 160840), (560, 140735), (700, 112588), (784, 100525), (980, 80420), (1225, 64336), (1400, 56294), (1960, 40210), (2450, 32168), (2800, 28147), (3920, 20105), (4021, 19600), (4900, 16084), (8042, 9800)]