81457896

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1993}}^1$

素因数の和:2146

約数の個数: 64

約数和(自身を含む): 221094720

約数和(自身を除く): 139636824

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 131, 156, 262, 312, 393, 524, 786, 1048, 1572, 1703, 1993, 3144, 3406, 3986, 5109, 5979, 6812, 7972, 10218, 11958, 13624, 15944, 20436, 23916, 25909, 40872, 47832, 51818, 77727, 103636, 155454, 207272, 261083, 310908, 522166, 621816, 783249, 1044332, 1566498, 2088664, 3132996, 3394079, 6265992, 6788158, 10182237, 13576316, 20364474, 27152632, 40728948, 81457896]

約数ペア:

[(1, 81457896), (2, 40728948), (3, 27152632), (4, 20364474), (6, 13576316), (8, 10182237), (12, 6788158), (13, 6265992), (24, 3394079), (26, 3132996), (39, 2088664), (52, 1566498), (78, 1044332), (104, 783249), (131, 621816), (156, 522166), (262, 310908), (312, 261083), (393, 207272), (524, 155454), (786, 103636), (1048, 77727), (1572, 51818), (1703, 47832), (1993, 40872), (3144, 25909), (3406, 23916), (3986, 20436), (5109, 15944), (5979, 13624), (6812, 11958), (7972, 10218)]