1993531880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{43451}}^1$

素因数の和:43530

約数の個数: 64

約数和(自身を含む): 4755386880

約数和(自身を除く): 2761855000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 37, 40, 62, 74, 124, 148, 155, 185, 248, 296, 310, 370, 620, 740, 1147, 1240, 1480, 2294, 4588, 5735, 9176, 11470, 22940, 43451, 45880, 86902, 173804, 217255, 347608, 434510, 869020, 1346981, 1607687, 1738040, 2693962, 3215374, 5387924, 6430748, 6734905, 8038435, 10775848, 12861496, 13469810, 16076870, 26939620, 32153740, 49838297, 53879240, 64307480, 99676594, 199353188, 249191485, 398706376, 498382970, 996765940, 1993531880]

約数ペア:

[(1, 1993531880), (2, 996765940), (4, 498382970), (5, 398706376), (8, 249191485), (10, 199353188), (20, 99676594), (31, 64307480), (37, 53879240), (40, 49838297), (62, 32153740), (74, 26939620), (124, 16076870), (148, 13469810), (155, 12861496), (185, 10775848), (248, 8038435), (296, 6734905), (310, 6430748), (370, 5387924), (620, 3215374), (740, 2693962), (1147, 1738040), (1240, 1607687), (1480, 1346981), (2294, 869020), (4588, 434510), (5735, 347608), (9176, 217255), (11470, 173804), (22940, 86902), (43451, 45880)]