20348120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{359}}^1$

素因数の和:492

約数の個数: 64

約数和(自身を含む): 49896000

約数和(自身を除く): 29547880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 109, 130, 218, 260, 359, 436, 520, 545, 718, 872, 1090, 1417, 1436, 1795, 2180, 2834, 2872, 3590, 4360, 4667, 5668, 7085, 7180, 9334, 11336, 14170, 14360, 18668, 23335, 28340, 37336, 39131, 46670, 56680, 78262, 93340, 156524, 186680, 195655, 313048, 391310, 508703, 782620, 1017406, 1565240, 2034812, 2543515, 4069624, 5087030, 10174060, 20348120]

約数ペア:

[(1, 20348120), (2, 10174060), (4, 5087030), (5, 4069624), (8, 2543515), (10, 2034812), (13, 1565240), (20, 1017406), (26, 782620), (40, 508703), (52, 391310), (65, 313048), (104, 195655), (109, 186680), (130, 156524), (218, 93340), (260, 78262), (359, 56680), (436, 46670), (520, 39131), (545, 37336), (718, 28340), (872, 23335), (1090, 18668), (1417, 14360), (1436, 14170), (1795, 11336), (2180, 9334), (2834, 7180), (2872, 7085), (3590, 5668), (4360, 4667)]