21404552

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:246

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 24560248

約数列:

[1, 2, 4, 8, 13, 26, 29, 47, 52, 58, 94, 104, 116, 151, 188, 232, 302, 376, 377, 604, 611, 754, 1208, 1222, 1363, 1508, 1963, 2444, 2726, 3016, 3926, 4379, 4888, 5452, 7097, 7852, 8758, 10904, 14194, 15704, 17516, 17719, 28388, 35032, 35438, 56776, 56927, 70876, 92261, 113854, 141752, 184522, 205813, 227708, 369044, 411626, 455416, 738088, 823252, 1646504, 2675569, 5351138, 10702276, 21404552]

約数ペア:

[(1, 21404552), (2, 10702276), (4, 5351138), (8, 2675569), (13, 1646504), (26, 823252), (29, 738088), (47, 455416), (52, 411626), (58, 369044), (94, 227708), (104, 205813), (116, 184522), (151, 141752), (188, 113854), (232, 92261), (302, 70876), (376, 56927), (377, 56776), (604, 35438), (611, 35032), (754, 28388), (1208, 17719), (1222, 17516), (1363, 15704), (1508, 14194), (1963, 10904), (2444, 8758), (2726, 7852), (3016, 7097), (3926, 5452), (4379, 4888)]