21858510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{401}}^1$

素因数の和:513

約数の個数: 64

約数和(自身を含む): 55572480

約数和(自身を除く): 33713970

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 79, 115, 138, 158, 230, 237, 345, 395, 401, 474, 690, 790, 802, 1185, 1203, 1817, 2005, 2370, 2406, 3634, 4010, 5451, 6015, 9085, 9223, 10902, 12030, 18170, 18446, 27255, 27669, 31679, 46115, 54510, 55338, 63358, 92230, 95037, 138345, 158395, 190074, 276690, 316790, 475185, 728617, 950370, 1457234, 2185851, 3643085, 4371702, 7286170, 10929255, 21858510]

約数ペア:

[(1, 21858510), (2, 10929255), (3, 7286170), (5, 4371702), (6, 3643085), (10, 2185851), (15, 1457234), (23, 950370), (30, 728617), (46, 475185), (69, 316790), (79, 276690), (115, 190074), (138, 158395), (158, 138345), (230, 95037), (237, 92230), (345, 63358), (395, 55338), (401, 54510), (474, 46115), (690, 31679), (790, 27669), (802, 27255), (1185, 18446), (1203, 18170), (1817, 12030), (2005, 10902), (2370, 9223), (2406, 9085), (3634, 6015), (4010, 5451)]