18528860

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:140

約数の個数: 96

約数和(自身を含む): 47241600

約数和(自身を除く): 28712740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 49, 70, 73, 74, 98, 140, 146, 148, 185, 196, 245, 259, 292, 343, 365, 370, 490, 511, 518, 686, 730, 740, 980, 1022, 1036, 1295, 1372, 1460, 1715, 1813, 2044, 2555, 2590, 2701, 3430, 3577, 3626, 5110, 5180, 5402, 6860, 7154, 7252, 9065, 10220, 10804, 12691, 13505, 14308, 17885, 18130, 18907, 25039, 25382, 27010, 35770, 36260, 37814, 50078, 50764, 54020, 63455, 71540, 75628, 94535, 100156, 125195, 126910, 132349, 189070, 250390, 253820, 264698, 378140, 500780, 529396, 661745, 926443, 1323490, 1852886, 2646980, 3705772, 4632215, 9264430, 18528860]

約数ペア:

[(1, 18528860), (2, 9264430), (4, 4632215), (5, 3705772), (7, 2646980), (10, 1852886), (14, 1323490), (20, 926443), (28, 661745), (35, 529396), (37, 500780), (49, 378140), (70, 264698), (73, 253820), (74, 250390), (98, 189070), (140, 132349), (146, 126910), (148, 125195), (185, 100156), (196, 94535), (245, 75628), (259, 71540), (292, 63455), (343, 54020), (365, 50764), (370, 50078), (490, 37814), (511, 36260), (518, 35770), (686, 27010), (730, 25382), (740, 25039), (980, 18907), (1022, 18130), (1036, 17885), (1295, 14308), (1372, 13505), (1460, 12691), (1715, 10804), (1813, 10220), (2044, 9065), (2555, 7252), (2590, 7154), (2701, 6860), (3430, 5402), (3577, 5180), (3626, 5110)]