20793420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{349}}^1$

素因数の和:695

約数の個数: 72

約数和(自身を含む): 63445200

約数和(自身を除く): 42651780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 331, 349, 662, 698, 993, 1047, 1324, 1396, 1655, 1745, 1986, 2094, 2979, 3141, 3310, 3490, 3972, 4188, 4965, 5235, 5958, 6282, 6620, 6980, 9930, 10470, 11916, 12564, 14895, 15705, 19860, 20940, 29790, 31410, 59580, 62820, 115519, 231038, 346557, 462076, 577595, 693114, 1039671, 1155190, 1386228, 1732785, 2079342, 2310380, 3465570, 4158684, 5198355, 6931140, 10396710, 20793420]

約数ペア:

[(1, 20793420), (2, 10396710), (3, 6931140), (4, 5198355), (5, 4158684), (6, 3465570), (9, 2310380), (10, 2079342), (12, 1732785), (15, 1386228), (18, 1155190), (20, 1039671), (30, 693114), (36, 577595), (45, 462076), (60, 346557), (90, 231038), (180, 115519), (331, 62820), (349, 59580), (662, 31410), (698, 29790), (993, 20940), (1047, 19860), (1324, 15705), (1396, 14895), (1655, 12564), (1745, 11916), (1986, 10470), (2094, 9930), (2979, 6980), (3141, 6620), (3310, 6282), (3490, 5958), (3972, 5235), (4188, 4965)]