81217440

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{56401}}^1$

素因数の和:56422

約数の個数: 72

約数和(自身を含む): 277159428

約数和(自身を除く): 195941988

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 56401, 112802, 169203, 225604, 282005, 338406, 451208, 507609, 564010, 676812, 846015, 902416, 1015218, 1128020, 1353624, 1692030, 1804832, 2030436, 2256040, 2538045, 2707248, 3384060, 4060872, 4512080, 5076090, 5414496, 6768120, 8121744, 9024160, 10152180, 13536240, 16243488, 20304360, 27072480, 40608720, 81217440]

約数ペア:

[(1, 81217440), (2, 40608720), (3, 27072480), (4, 20304360), (5, 16243488), (6, 13536240), (8, 10152180), (9, 9024160), (10, 8121744), (12, 6768120), (15, 5414496), (16, 5076090), (18, 4512080), (20, 4060872), (24, 3384060), (30, 2707248), (32, 2538045), (36, 2256040), (40, 2030436), (45, 1804832), (48, 1692030), (60, 1353624), (72, 1128020), (80, 1015218), (90, 902416), (96, 846015), (120, 676812), (144, 564010), (160, 507609), (180, 451208), (240, 338406), (288, 282005), (360, 225604), (480, 169203), (720, 112802), (1440, 56401)]