19991475

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{4231}}^1$

素因数の和:4257

約数の個数: 48

約数和(自身を含む): 41981440

約数和(自身を除く): 21989965

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 105, 135, 175, 189, 225, 315, 525, 675, 945, 1575, 4231, 4725, 12693, 21155, 29617, 38079, 63465, 88851, 105775, 114237, 148085, 190395, 266553, 317325, 444255, 571185, 740425, 799659, 951975, 1332765, 2221275, 2855925, 3998295, 6663825, 19991475]

約数ペア:

[(1, 19991475), (3, 6663825), (5, 3998295), (7, 2855925), (9, 2221275), (15, 1332765), (21, 951975), (25, 799659), (27, 740425), (35, 571185), (45, 444255), (63, 317325), (75, 266553), (105, 190395), (135, 148085), (175, 114237), (189, 105775), (225, 88851), (315, 63465), (525, 38079), (675, 29617), (945, 21155), (1575, 12693), (4231, 4725)]