18000072

素因数分解:

$2^3\times 3^2\times {\mathrm{53}}^2\times {\mathrm{89}}^1$

素因数の和:207

約数の個数: 72

約数和(自身を含む): 50245650

約数和(自身を除く): 32245578

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 53, 72, 89, 106, 159, 178, 212, 267, 318, 356, 424, 477, 534, 636, 712, 801, 954, 1068, 1272, 1602, 1908, 2136, 2809, 3204, 3816, 4717, 5618, 6408, 8427, 9434, 11236, 14151, 16854, 18868, 22472, 25281, 28302, 33708, 37736, 42453, 50562, 56604, 67416, 84906, 101124, 113208, 169812, 202248, 250001, 339624, 500002, 750003, 1000004, 1500006, 2000008, 2250009, 3000012, 4500018, 6000024, 9000036, 18000072]

約数ペア:

[(1, 18000072), (2, 9000036), (3, 6000024), (4, 4500018), (6, 3000012), (8, 2250009), (9, 2000008), (12, 1500006), (18, 1000004), (24, 750003), (36, 500002), (53, 339624), (72, 250001), (89, 202248), (106, 169812), (159, 113208), (178, 101124), (212, 84906), (267, 67416), (318, 56604), (356, 50562), (424, 42453), (477, 37736), (534, 33708), (636, 28302), (712, 25281), (801, 22472), (954, 18868), (1068, 16854), (1272, 14151), (1602, 11236), (1908, 9434), (2136, 8427), (2809, 6408), (3204, 5618), (3816, 4717)]