21685384

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{229}}^1$

素因数の和:350

約数の個数: 64

約数和(自身を含む): 49680000

約数和(自身を除く): 27994616

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 89, 133, 152, 178, 229, 266, 356, 458, 532, 623, 712, 916, 1064, 1246, 1603, 1691, 1832, 2492, 3206, 3382, 4351, 4984, 6412, 6764, 8702, 11837, 12824, 13528, 17404, 20381, 23674, 30457, 34808, 40762, 47348, 60914, 81524, 94696, 121828, 142667, 163048, 243656, 285334, 387239, 570668, 774478, 1141336, 1548956, 2710673, 3097912, 5421346, 10842692, 21685384]

約数ペア:

[(1, 21685384), (2, 10842692), (4, 5421346), (7, 3097912), (8, 2710673), (14, 1548956), (19, 1141336), (28, 774478), (38, 570668), (56, 387239), (76, 285334), (89, 243656), (133, 163048), (152, 142667), (178, 121828), (229, 94696), (266, 81524), (356, 60914), (458, 47348), (532, 40762), (623, 34808), (712, 30457), (916, 23674), (1064, 20381), (1246, 17404), (1603, 13528), (1691, 12824), (1832, 11837), (2492, 8702), (3206, 6764), (3382, 6412), (4351, 4984)]