20663856

素因数分解:

$2^4\times 3^3\times {\mathrm{31}}^1\times {\mathrm{1543}}^1$

素因数の和:1591

約数の個数: 80

約数和(自身を含む): 61265920

約数和(自身を除く): 40602064

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 31, 36, 48, 54, 62, 72, 93, 108, 124, 144, 186, 216, 248, 279, 372, 432, 496, 558, 744, 837, 1116, 1488, 1543, 1674, 2232, 3086, 3348, 4464, 4629, 6172, 6696, 9258, 12344, 13392, 13887, 18516, 24688, 27774, 37032, 41661, 47833, 55548, 74064, 83322, 95666, 111096, 143499, 166644, 191332, 222192, 286998, 333288, 382664, 430497, 573996, 666576, 765328, 860994, 1147992, 1291491, 1721988, 2295984, 2582982, 3443976, 5165964, 6887952, 10331928, 20663856]

約数ペア:

[(1, 20663856), (2, 10331928), (3, 6887952), (4, 5165964), (6, 3443976), (8, 2582982), (9, 2295984), (12, 1721988), (16, 1291491), (18, 1147992), (24, 860994), (27, 765328), (31, 666576), (36, 573996), (48, 430497), (54, 382664), (62, 333288), (72, 286998), (93, 222192), (108, 191332), (124, 166644), (144, 143499), (186, 111096), (216, 95666), (248, 83322), (279, 74064), (372, 55548), (432, 47833), (496, 41661), (558, 37032), (744, 27774), (837, 24688), (1116, 18516), (1488, 13887), (1543, 13392), (1674, 12344), (2232, 9258), (3086, 6696), (3348, 6172), (4464, 4629)]