217996884

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{123581}}^1$

素因数の和:123605

約数の個数: 54

約数和(自身を含む): 641019834

約数和(自身を除く): 423022950

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 49, 63, 84, 98, 126, 147, 196, 252, 294, 441, 588, 882, 1764, 123581, 247162, 370743, 494324, 741486, 865067, 1112229, 1482972, 1730134, 2224458, 2595201, 3460268, 4448916, 5190402, 6055469, 7785603, 10380804, 12110938, 15571206, 18166407, 24221876, 31142412, 36332814, 54499221, 72665628, 108998442, 217996884]

約数ペア:

[(1, 217996884), (2, 108998442), (3, 72665628), (4, 54499221), (6, 36332814), (7, 31142412), (9, 24221876), (12, 18166407), (14, 15571206), (18, 12110938), (21, 10380804), (28, 7785603), (36, 6055469), (42, 5190402), (49, 4448916), (63, 3460268), (84, 2595201), (98, 2224458), (126, 1730134), (147, 1482972), (196, 1112229), (252, 865067), (294, 741486), (441, 494324), (588, 370743), (882, 247162), (1764, 123581)]