21237408

素因数分解:

$2^5\times 3^2\times {\mathrm{37}}^1\times {\mathrm{1993}}^1$

素因数の和:2046

約数の個数: 72

約数和(自身を含む): 62057268

約数和(自身を除く): 40819860

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 37, 48, 72, 74, 96, 111, 144, 148, 222, 288, 296, 333, 444, 592, 666, 888, 1184, 1332, 1776, 1993, 2664, 3552, 3986, 5328, 5979, 7972, 10656, 11958, 15944, 17937, 23916, 31888, 35874, 47832, 63776, 71748, 73741, 95664, 143496, 147482, 191328, 221223, 286992, 294964, 442446, 573984, 589928, 663669, 884892, 1179856, 1327338, 1769784, 2359712, 2654676, 3539568, 5309352, 7079136, 10618704, 21237408]

約数ペア:

[(1, 21237408), (2, 10618704), (3, 7079136), (4, 5309352), (6, 3539568), (8, 2654676), (9, 2359712), (12, 1769784), (16, 1327338), (18, 1179856), (24, 884892), (32, 663669), (36, 589928), (37, 573984), (48, 442446), (72, 294964), (74, 286992), (96, 221223), (111, 191328), (144, 147482), (148, 143496), (222, 95664), (288, 73741), (296, 71748), (333, 63776), (444, 47832), (592, 35874), (666, 31888), (888, 23916), (1184, 17937), (1332, 15944), (1776, 11958), (1993, 10656), (2664, 7972), (3552, 5979), (3986, 5328)]