20129788

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{3313}}^1$

素因数の和:3362

約数の個数: 36

約数和(自身を含む): 42313152

約数和(自身を除く): 22183364

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 98, 124, 196, 217, 434, 868, 1519, 3038, 3313, 6076, 6626, 13252, 23191, 46382, 92764, 102703, 162337, 205406, 324674, 410812, 649348, 718921, 1437842, 2875684, 5032447, 10064894, 20129788]

約数ペア:

[(1, 20129788), (2, 10064894), (4, 5032447), (7, 2875684), (14, 1437842), (28, 718921), (31, 649348), (49, 410812), (62, 324674), (98, 205406), (124, 162337), (196, 102703), (217, 92764), (434, 46382), (868, 23191), (1519, 13252), (3038, 6626), (3313, 6076)]