18409820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:231

約数の個数: 96

約数和(自身を含む): 46823616

約数和(自身を除く): 28413796

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 41, 44, 52, 55, 65, 82, 110, 130, 143, 157, 164, 205, 220, 260, 286, 314, 410, 451, 533, 572, 628, 715, 785, 820, 902, 1066, 1430, 1570, 1727, 1804, 2041, 2132, 2255, 2665, 2860, 3140, 3454, 4082, 4510, 5330, 5863, 6437, 6908, 8164, 8635, 9020, 10205, 10660, 11726, 12874, 17270, 20410, 22451, 23452, 25748, 29315, 32185, 34540, 40820, 44902, 58630, 64370, 70807, 83681, 89804, 112255, 117260, 128740, 141614, 167362, 224510, 283228, 334724, 354035, 418405, 449020, 708070, 836810, 920491, 1416140, 1673620, 1840982, 3681964, 4602455, 9204910, 18409820]

約数ペア:

[(1, 18409820), (2, 9204910), (4, 4602455), (5, 3681964), (10, 1840982), (11, 1673620), (13, 1416140), (20, 920491), (22, 836810), (26, 708070), (41, 449020), (44, 418405), (52, 354035), (55, 334724), (65, 283228), (82, 224510), (110, 167362), (130, 141614), (143, 128740), (157, 117260), (164, 112255), (205, 89804), (220, 83681), (260, 70807), (286, 64370), (314, 58630), (410, 44902), (451, 40820), (533, 34540), (572, 32185), (628, 29315), (715, 25748), (785, 23452), (820, 22451), (902, 20410), (1066, 17270), (1430, 12874), (1570, 11726), (1727, 10660), (1804, 10205), (2041, 9020), (2132, 8635), (2255, 8164), (2665, 6908), (2860, 6437), (3140, 5863), (3454, 5330), (4082, 4510)]