21231882

素因数分解:

$2^1\times 3^5\times 7^1\times {\mathrm{79}}^2$

素因数の和:182

約数の個数: 72

約数和(自身を含む): 55220256

約数和(自身を除く): 33988374

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 79, 81, 126, 158, 162, 189, 237, 243, 378, 474, 486, 553, 567, 711, 1106, 1134, 1422, 1659, 1701, 2133, 3318, 3402, 4266, 4977, 6241, 6399, 9954, 12482, 12798, 14931, 18723, 19197, 29862, 37446, 38394, 43687, 44793, 56169, 87374, 89586, 112338, 131061, 134379, 168507, 262122, 268758, 337014, 393183, 505521, 786366, 1011042, 1179549, 1516563, 2359098, 3033126, 3538647, 7077294, 10615941, 21231882]

約数ペア:

[(1, 21231882), (2, 10615941), (3, 7077294), (6, 3538647), (7, 3033126), (9, 2359098), (14, 1516563), (18, 1179549), (21, 1011042), (27, 786366), (42, 505521), (54, 393183), (63, 337014), (79, 268758), (81, 262122), (126, 168507), (158, 134379), (162, 131061), (189, 112338), (237, 89586), (243, 87374), (378, 56169), (474, 44793), (486, 43687), (553, 38394), (567, 37446), (711, 29862), (1106, 19197), (1134, 18723), (1422, 14931), (1659, 12798), (1701, 12482), (2133, 9954), (3318, 6399), (3402, 6241), (4266, 4977)]