21398616

素因数分解:

$2^3\times 3^2\times {\mathrm{439}}^1\times {\mathrm{677}}^1$

素因数の和:1128

約数の個数: 48

約数和(自身を含む): 58172400

約数和(自身を除く): 36773784

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 439, 677, 878, 1317, 1354, 1756, 2031, 2634, 2708, 3512, 3951, 4062, 5268, 5416, 6093, 7902, 8124, 10536, 12186, 15804, 16248, 24372, 31608, 48744, 297203, 594406, 891609, 1188812, 1783218, 2377624, 2674827, 3566436, 5349654, 7132872, 10699308, 21398616]

約数ペア:

[(1, 21398616), (2, 10699308), (3, 7132872), (4, 5349654), (6, 3566436), (8, 2674827), (9, 2377624), (12, 1783218), (18, 1188812), (24, 891609), (36, 594406), (72, 297203), (439, 48744), (677, 31608), (878, 24372), (1317, 16248), (1354, 15804), (1756, 12186), (2031, 10536), (2634, 8124), (2708, 7902), (3512, 6093), (3951, 5416), (4062, 5268)]