20389680

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28319}}^1$

素因数の和:28338

約数の個数: 60

約数和(自身を含む): 68477760

約数和(自身を除く): 48088080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28319, 56638, 84957, 113276, 141595, 169914, 226552, 254871, 283190, 339828, 424785, 453104, 509742, 566380, 679656, 849570, 1019484, 1132760, 1274355, 1359312, 1699140, 2038968, 2265520, 2548710, 3398280, 4077936, 5097420, 6796560, 10194840, 20389680]

約数ペア:

[(1, 20389680), (2, 10194840), (3, 6796560), (4, 5097420), (5, 4077936), (6, 3398280), (8, 2548710), (9, 2265520), (10, 2038968), (12, 1699140), (15, 1359312), (16, 1274355), (18, 1132760), (20, 1019484), (24, 849570), (30, 679656), (36, 566380), (40, 509742), (45, 453104), (48, 424785), (60, 339828), (72, 283190), (80, 254871), (90, 226552), (120, 169914), (144, 141595), (180, 113276), (240, 84957), (360, 56638), (720, 28319)]