1978240

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{281}}^1$

素因数の和:311

約数の個数: 64

約数和(自身を含む): 5177520

約数和(自身を除く): 3199280

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 281, 320, 352, 440, 562, 640, 704, 880, 1124, 1405, 1408, 1760, 2248, 2810, 3091, 3520, 4496, 5620, 6182, 7040, 8992, 11240, 12364, 15455, 17984, 22480, 24728, 30910, 35968, 44960, 49456, 61820, 89920, 98912, 123640, 179840, 197824, 247280, 395648, 494560, 989120, 1978240]

約数ペア:

[(1, 1978240), (2, 989120), (4, 494560), (5, 395648), (8, 247280), (10, 197824), (11, 179840), (16, 123640), (20, 98912), (22, 89920), (32, 61820), (40, 49456), (44, 44960), (55, 35968), (64, 30910), (80, 24728), (88, 22480), (110, 17984), (128, 15455), (160, 12364), (176, 11240), (220, 8992), (281, 7040), (320, 6182), (352, 5620), (440, 4496), (562, 3520), (640, 3091), (704, 2810), (880, 2248), (1124, 1760), (1405, 1408)]