20451438

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{29}}^2\times {\mathrm{193}}^1$

素因数の和:266

約数の個数: 72

約数和(自身を含む): 52719888

約数和(自身を除く): 32268450

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 29, 42, 58, 63, 87, 126, 174, 193, 203, 261, 386, 406, 522, 579, 609, 841, 1158, 1218, 1351, 1682, 1737, 1827, 2523, 2702, 3474, 3654, 4053, 5046, 5597, 5887, 7569, 8106, 11194, 11774, 12159, 15138, 16791, 17661, 24318, 33582, 35322, 39179, 50373, 52983, 78358, 100746, 105966, 117537, 162313, 235074, 324626, 352611, 486939, 705222, 973878, 1136191, 1460817, 2272382, 2921634, 3408573, 6817146, 10225719, 20451438]

約数ペア:

[(1, 20451438), (2, 10225719), (3, 6817146), (6, 3408573), (7, 2921634), (9, 2272382), (14, 1460817), (18, 1136191), (21, 973878), (29, 705222), (42, 486939), (58, 352611), (63, 324626), (87, 235074), (126, 162313), (174, 117537), (193, 105966), (203, 100746), (261, 78358), (386, 52983), (406, 50373), (522, 39179), (579, 35322), (609, 33582), (841, 24318), (1158, 17661), (1218, 16791), (1351, 15138), (1682, 12159), (1737, 11774), (1827, 11194), (2523, 8106), (2702, 7569), (3474, 5887), (3654, 5597), (4053, 5046)]