21891288

素因数分解:

$2^3\times 3^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{443}}^1$

素因数の和:552

約数の個数: 64

約数和(自身を含む): 57542400

約数和(自身を除く): 35651112

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 29, 58, 71, 87, 116, 142, 174, 213, 232, 284, 348, 426, 443, 568, 696, 852, 886, 1329, 1704, 1772, 2059, 2658, 3544, 4118, 5316, 6177, 8236, 10632, 12354, 12847, 16472, 24708, 25694, 31453, 38541, 49416, 51388, 62906, 77082, 94359, 102776, 125812, 154164, 188718, 251624, 308328, 377436, 754872, 912137, 1824274, 2736411, 3648548, 5472822, 7297096, 10945644, 21891288]

約数ペア:

[(1, 21891288), (2, 10945644), (3, 7297096), (4, 5472822), (6, 3648548), (8, 2736411), (12, 1824274), (24, 912137), (29, 754872), (58, 377436), (71, 308328), (87, 251624), (116, 188718), (142, 154164), (174, 125812), (213, 102776), (232, 94359), (284, 77082), (348, 62906), (426, 51388), (443, 49416), (568, 38541), (696, 31453), (852, 25694), (886, 24708), (1329, 16472), (1704, 12847), (1772, 12354), (2059, 10632), (2658, 8236), (3544, 6177), (4118, 5316)]