21379830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{257}}^1$

素因数の和:373

約数の個数: 64

約数和(自身を含む): 53498880

約数和(自身を除く): 32119050

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 47, 59, 94, 118, 141, 177, 235, 257, 282, 295, 354, 470, 514, 590, 705, 771, 885, 1285, 1410, 1542, 1770, 2570, 2773, 3855, 5546, 7710, 8319, 12079, 13865, 15163, 16638, 24158, 27730, 30326, 36237, 41595, 45489, 60395, 72474, 75815, 83190, 90978, 120790, 151630, 181185, 227445, 362370, 454890, 712661, 1425322, 2137983, 3563305, 4275966, 7126610, 10689915, 21379830]

約数ペア:

[(1, 21379830), (2, 10689915), (3, 7126610), (5, 4275966), (6, 3563305), (10, 2137983), (15, 1425322), (30, 712661), (47, 454890), (59, 362370), (94, 227445), (118, 181185), (141, 151630), (177, 120790), (235, 90978), (257, 83190), (282, 75815), (295, 72474), (354, 60395), (470, 45489), (514, 41595), (590, 36237), (705, 30326), (771, 27730), (885, 24158), (1285, 16638), (1410, 15163), (1542, 13865), (1770, 12079), (2570, 8319), (2773, 7710), (3855, 5546)]