649102020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{220783}}^1$

素因数の和:220809

約数の個数: 72

約数和(自身を含む): 2114227584

約数和(自身を除く): 1465125564

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 220783, 441566, 662349, 883132, 1103915, 1324698, 1545481, 2207830, 2649396, 3090962, 3311745, 4415660, 4636443, 6181924, 6623490, 7727405, 9272886, 10818367, 13246980, 15454810, 18545772, 21636734, 23182215, 30909620, 32455101, 43273468, 46364430, 54091835, 64910202, 92728860, 108183670, 129820404, 162275505, 216367340, 324551010, 649102020]

約数ペア:

[(1, 649102020), (2, 324551010), (3, 216367340), (4, 162275505), (5, 129820404), (6, 108183670), (7, 92728860), (10, 64910202), (12, 54091835), (14, 46364430), (15, 43273468), (20, 32455101), (21, 30909620), (28, 23182215), (30, 21636734), (35, 18545772), (42, 15454810), (49, 13246980), (60, 10818367), (70, 9272886), (84, 7727405), (98, 6623490), (105, 6181924), (140, 4636443), (147, 4415660), (196, 3311745), (210, 3090962), (245, 2649396), (294, 2207830), (420, 1545481), (490, 1324698), (588, 1103915), (735, 883132), (980, 662349), (1470, 441566), (2940, 220783)]