81392480

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{359}}^1$

素因数の和:496

約数の個数: 96

約数和(自身を含む): 209563200

約数和(自身を除く): 128170720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 109, 130, 160, 208, 218, 260, 359, 416, 436, 520, 545, 718, 872, 1040, 1090, 1417, 1436, 1744, 1795, 2080, 2180, 2834, 2872, 3488, 3590, 4360, 4667, 5668, 5744, 7085, 7180, 8720, 9334, 11336, 11488, 14170, 14360, 17440, 18668, 22672, 23335, 28340, 28720, 37336, 39131, 45344, 46670, 56680, 57440, 74672, 78262, 93340, 113360, 149344, 156524, 186680, 195655, 226720, 313048, 373360, 391310, 508703, 626096, 746720, 782620, 1017406, 1252192, 1565240, 2034812, 2543515, 3130480, 4069624, 5087030, 6260960, 8139248, 10174060, 16278496, 20348120, 40696240, 81392480]

約数ペア:

[(1, 81392480), (2, 40696240), (4, 20348120), (5, 16278496), (8, 10174060), (10, 8139248), (13, 6260960), (16, 5087030), (20, 4069624), (26, 3130480), (32, 2543515), (40, 2034812), (52, 1565240), (65, 1252192), (80, 1017406), (104, 782620), (109, 746720), (130, 626096), (160, 508703), (208, 391310), (218, 373360), (260, 313048), (359, 226720), (416, 195655), (436, 186680), (520, 156524), (545, 149344), (718, 113360), (872, 93340), (1040, 78262), (1090, 74672), (1417, 57440), (1436, 56680), (1744, 46670), (1795, 45344), (2080, 39131), (2180, 37336), (2834, 28720), (2872, 28340), (3488, 23335), (3590, 22672), (4360, 18668), (4667, 17440), (5668, 14360), (5744, 14170), (7085, 11488), (7180, 11336), (8720, 9334)]