20921625180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{329267}}^1$

素因数の和:329635

約数の個数: 72

約数和(自身を含む): 63642236112

約数和(自身を除く): 42720610932

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 353, 706, 1059, 1412, 1765, 2118, 3177, 3530, 4236, 5295, 6354, 7060, 10590, 12708, 15885, 21180, 31770, 63540, 329267, 658534, 987801, 1317068, 1646335, 1975602, 2963403, 3292670, 3951204, 4939005, 5926806, 6585340, 9878010, 11853612, 14817015, 19756020, 29634030, 59268060, 116231251, 232462502, 348693753, 464925004, 581156255, 697387506, 1046081259, 1162312510, 1394775012, 1743468765, 2092162518, 2324625020, 3486937530, 4184325036, 5230406295, 6973875060, 10460812590, 20921625180]

約数ペア:

[(1, 20921625180), (2, 10460812590), (3, 6973875060), (4, 5230406295), (5, 4184325036), (6, 3486937530), (9, 2324625020), (10, 2092162518), (12, 1743468765), (15, 1394775012), (18, 1162312510), (20, 1046081259), (30, 697387506), (36, 581156255), (45, 464925004), (60, 348693753), (90, 232462502), (180, 116231251), (353, 59268060), (706, 29634030), (1059, 19756020), (1412, 14817015), (1765, 11853612), (2118, 9878010), (3177, 6585340), (3530, 5926806), (4236, 4939005), (5295, 3951204), (6354, 3292670), (7060, 2963403), (10590, 1975602), (12708, 1646335), (15885, 1317068), (21180, 987801), (31770, 658534), (63540, 329267)]