21499665

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{569}}^1$

素因数の和:817

約数の個数: 32

約数和(自身を含む): 37756800

約数和(自身を除く): 16257135

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 229, 569, 687, 1145, 1707, 2519, 2845, 3435, 6259, 7557, 8535, 12595, 18777, 31295, 37785, 93885, 130301, 390903, 651505, 1433311, 1954515, 4299933, 7166555, 21499665]

約数ペア:

[(1, 21499665), (3, 7166555), (5, 4299933), (11, 1954515), (15, 1433311), (33, 651505), (55, 390903), (165, 130301), (229, 93885), (569, 37785), (687, 31295), (1145, 18777), (1707, 12595), (2519, 8535), (2845, 7557), (3435, 6259)]