128722020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{43783}}^1$

素因数の和:43809

約数の個数: 72

約数和(自身を含む): 419275584

約数和(自身を除く): 290553564

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, 43783, 87566, 131349, 175132, 218915, 262698, 306481, 437830, 525396, 612962, 656745, 875660, 919443, 1225924, 1313490, 1532405, 1838886, 2145367, 2626980, 3064810, 3677772, 4290734, 4597215, 6129620, 6436101, 8581468, 9194430, 10726835, 12872202, 18388860, 21453670, 25744404, 32180505, 42907340, 64361010, 128722020]

約数ペア:

[(1, 128722020), (2, 64361010), (3, 42907340), (4, 32180505), (5, 25744404), (6, 21453670), (7, 18388860), (10, 12872202), (12, 10726835), (14, 9194430), (15, 8581468), (20, 6436101), (21, 6129620), (28, 4597215), (30, 4290734), (35, 3677772), (42, 3064810), (49, 2626980), (60, 2145367), (70, 1838886), (84, 1532405), (98, 1313490), (105, 1225924), (140, 919443), (147, 875660), (196, 656745), (210, 612962), (245, 525396), (294, 437830), (420, 306481), (490, 262698), (588, 218915), (735, 175132), (980, 131349), (1470, 87566), (2940, 43783)]