399423780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{317003}}^1$

素因数の和:317025

約数の個数: 72

約数和(自身を含む): 1384673472

約数和(自身を除く): 985249692

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 317003, 634006, 951009, 1268012, 1585015, 1902018, 2219021, 2853027, 3170030, 3804036, 4438042, 4755045, 5706054, 6340060, 6657063, 8876084, 9510090, 11095105, 11412108, 13314126, 14265135, 19020180, 19971189, 22190210, 26628252, 28530270, 33285315, 39942378, 44380420, 57060540, 66570630, 79884756, 99855945, 133141260, 199711890, 399423780]

約数ペア:

[(1, 399423780), (2, 199711890), (3, 133141260), (4, 99855945), (5, 79884756), (6, 66570630), (7, 57060540), (9, 44380420), (10, 39942378), (12, 33285315), (14, 28530270), (15, 26628252), (18, 22190210), (20, 19971189), (21, 19020180), (28, 14265135), (30, 13314126), (35, 11412108), (36, 11095105), (42, 9510090), (45, 8876084), (60, 6657063), (63, 6340060), (70, 5706054), (84, 4755045), (90, 4438042), (105, 3804036), (126, 3170030), (140, 2853027), (180, 2219021), (210, 1902018), (252, 1585015), (315, 1268012), (420, 951009), (630, 634006), (1260, 317003)]