16281990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1381}}^1$

素因数の和:1525

約数の個数: 48

約数和(自身を含む): 42687216

約数和(自身を除く): 26405226

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 131, 262, 393, 655, 786, 1179, 1310, 1381, 1965, 2358, 2762, 3930, 4143, 5895, 6905, 8286, 11790, 12429, 13810, 20715, 24858, 41430, 62145, 124290, 180911, 361822, 542733, 904555, 1085466, 1628199, 1809110, 2713665, 3256398, 5427330, 8140995, 16281990]

約数ペア:

[(1, 16281990), (2, 8140995), (3, 5427330), (5, 3256398), (6, 2713665), (9, 1809110), (10, 1628199), (15, 1085466), (18, 904555), (30, 542733), (45, 361822), (90, 180911), (131, 124290), (262, 62145), (393, 41430), (655, 24858), (786, 20715), (1179, 13810), (1310, 12429), (1381, 11790), (1965, 8286), (2358, 6905), (2762, 5895), (3930, 4143)]