21497778

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{911}}^1$

素因数の和:964

約数の個数: 64

約数和(自身を含む): 52531200

約数和(自身を除く): 31033422

約数列:

[1, 2, 3, 6, 9, 18, 19, 23, 27, 38, 46, 54, 57, 69, 114, 138, 171, 207, 342, 414, 437, 513, 621, 874, 911, 1026, 1242, 1311, 1822, 2622, 2733, 3933, 5466, 7866, 8199, 11799, 16398, 17309, 20953, 23598, 24597, 34618, 41906, 49194, 51927, 62859, 103854, 125718, 155781, 188577, 311562, 377154, 398107, 467343, 565731, 796214, 934686, 1131462, 1194321, 2388642, 3582963, 7165926, 10748889, 21497778]

約数ペア:

[(1, 21497778), (2, 10748889), (3, 7165926), (6, 3582963), (9, 2388642), (18, 1194321), (19, 1131462), (23, 934686), (27, 796214), (38, 565731), (46, 467343), (54, 398107), (57, 377154), (69, 311562), (114, 188577), (138, 155781), (171, 125718), (207, 103854), (342, 62859), (414, 51927), (437, 49194), (513, 41906), (621, 34618), (874, 24597), (911, 23598), (1026, 20953), (1242, 17309), (1311, 16398), (1822, 11799), (2622, 8199), (2733, 7866), (3933, 5466)]