21372855

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{7019}}^1$

素因数の和:7063

約数の個数: 32

約数和(自身を含む): 40435200

約数和(自身を除く): 19062345

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 87, 105, 145, 203, 435, 609, 1015, 3045, 7019, 21057, 35095, 49133, 105285, 147399, 203551, 245665, 610653, 736995, 1017755, 1424857, 3053265, 4274571, 7124285, 21372855]

約数ペア:

[(1, 21372855), (3, 7124285), (5, 4274571), (7, 3053265), (15, 1424857), (21, 1017755), (29, 736995), (35, 610653), (87, 245665), (105, 203551), (145, 147399), (203, 105285), (435, 49133), (609, 35095), (1015, 21057), (3045, 7019)]