21000474

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{367}}^1$

素因数の和:420

約数の個数: 72

約数和(自身を含む): 52872768

約数和(自身を除く): 31872294

約数列:

[1, 2, 3, 6, 9, 11, 17, 18, 22, 33, 34, 51, 66, 99, 102, 153, 187, 198, 289, 306, 367, 374, 561, 578, 734, 867, 1101, 1122, 1683, 1734, 2202, 2601, 3179, 3303, 3366, 4037, 5202, 6239, 6358, 6606, 8074, 9537, 12111, 12478, 18717, 19074, 24222, 28611, 36333, 37434, 56151, 57222, 68629, 72666, 106063, 112302, 137258, 205887, 212126, 318189, 411774, 617661, 636378, 954567, 1166693, 1235322, 1909134, 2333386, 3500079, 7000158, 10500237, 21000474]

約数ペア:

[(1, 21000474), (2, 10500237), (3, 7000158), (6, 3500079), (9, 2333386), (11, 1909134), (17, 1235322), (18, 1166693), (22, 954567), (33, 636378), (34, 617661), (51, 411774), (66, 318189), (99, 212126), (102, 205887), (153, 137258), (187, 112302), (198, 106063), (289, 72666), (306, 68629), (367, 57222), (374, 56151), (561, 37434), (578, 36333), (734, 28611), (867, 24222), (1101, 19074), (1122, 18717), (1683, 12478), (1734, 12111), (2202, 9537), (2601, 8074), (3179, 6606), (3303, 6358), (3366, 6239), (4037, 5202)]