28007388

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{193}}^1$

素因数の和:371

約数の個数: 72

約数和(自身を含む): 74146800

約数和(自身を除く): 46139412

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 87, 116, 139, 174, 193, 261, 278, 348, 386, 417, 522, 556, 579, 772, 834, 1044, 1158, 1251, 1668, 1737, 2316, 2502, 3474, 4031, 5004, 5597, 6948, 8062, 11194, 12093, 16124, 16791, 22388, 24186, 26827, 33582, 36279, 48372, 50373, 53654, 67164, 72558, 80481, 100746, 107308, 145116, 160962, 201492, 241443, 321924, 482886, 777983, 965772, 1555966, 2333949, 3111932, 4667898, 7001847, 9335796, 14003694, 28007388]

約数ペア:

[(1, 28007388), (2, 14003694), (3, 9335796), (4, 7001847), (6, 4667898), (9, 3111932), (12, 2333949), (18, 1555966), (29, 965772), (36, 777983), (58, 482886), (87, 321924), (116, 241443), (139, 201492), (174, 160962), (193, 145116), (261, 107308), (278, 100746), (348, 80481), (386, 72558), (417, 67164), (522, 53654), (556, 50373), (579, 48372), (772, 36279), (834, 33582), (1044, 26827), (1158, 24186), (1251, 22388), (1668, 16791), (1737, 16124), (2316, 12093), (2502, 11194), (3474, 8062), (4031, 6948), (5004, 5597)]