20644704

素因数分解:

$2^5\times 3^2\times {\mathrm{97}}^1\times {\mathrm{739}}^1$

素因数の和:852

約数の個数: 72

約数和(自身を含む): 59393880

約数和(自身を除く): 38749176

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 97, 144, 194, 288, 291, 388, 582, 739, 776, 873, 1164, 1478, 1552, 1746, 2217, 2328, 2956, 3104, 3492, 4434, 4656, 5912, 6651, 6984, 8868, 9312, 11824, 13302, 13968, 17736, 23648, 26604, 27936, 35472, 53208, 70944, 71683, 106416, 143366, 212832, 215049, 286732, 430098, 573464, 645147, 860196, 1146928, 1290294, 1720392, 2293856, 2580588, 3440784, 5161176, 6881568, 10322352, 20644704]

約数ペア:

[(1, 20644704), (2, 10322352), (3, 6881568), (4, 5161176), (6, 3440784), (8, 2580588), (9, 2293856), (12, 1720392), (16, 1290294), (18, 1146928), (24, 860196), (32, 645147), (36, 573464), (48, 430098), (72, 286732), (96, 215049), (97, 212832), (144, 143366), (194, 106416), (288, 71683), (291, 70944), (388, 53208), (582, 35472), (739, 27936), (776, 26604), (873, 23648), (1164, 17736), (1478, 13968), (1552, 13302), (1746, 11824), (2217, 9312), (2328, 8868), (2956, 6984), (3104, 6651), (3492, 5912), (4434, 4656)]