90711680

素因数分解:

$2^7\times 5^1\times {\mathrm{41}}^1\times {\mathrm{3457}}^1$

素因数の和:3517

約数の個数: 64

約数和(自身を含む): 222211080

約数和(自身を除く): 131499400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 128, 160, 164, 205, 320, 328, 410, 640, 656, 820, 1312, 1640, 2624, 3280, 3457, 5248, 6560, 6914, 13120, 13828, 17285, 26240, 27656, 34570, 55312, 69140, 110624, 138280, 141737, 221248, 276560, 283474, 442496, 553120, 566948, 708685, 1106240, 1133896, 1417370, 2212480, 2267792, 2834740, 4535584, 5669480, 9071168, 11338960, 18142336, 22677920, 45355840, 90711680]

約数ペア:

[(1, 90711680), (2, 45355840), (4, 22677920), (5, 18142336), (8, 11338960), (10, 9071168), (16, 5669480), (20, 4535584), (32, 2834740), (40, 2267792), (41, 2212480), (64, 1417370), (80, 1133896), (82, 1106240), (128, 708685), (160, 566948), (164, 553120), (205, 442496), (320, 283474), (328, 276560), (410, 221248), (640, 141737), (656, 138280), (820, 110624), (1312, 69140), (1640, 55312), (2624, 34570), (3280, 27656), (3457, 26240), (5248, 17285), (6560, 13828), (6914, 13120)]