20648502

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{571}}^1$

素因数の和:634

約数の個数: 72

約数和(自身を含む): 53405352

約数和(自身を除く): 32756850

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 41, 42, 49, 63, 82, 98, 123, 126, 147, 246, 287, 294, 369, 441, 571, 574, 738, 861, 882, 1142, 1713, 1722, 2009, 2583, 3426, 3997, 4018, 5139, 5166, 6027, 7994, 10278, 11991, 12054, 18081, 23411, 23982, 27979, 35973, 36162, 46822, 55958, 70233, 71946, 83937, 140466, 163877, 167874, 210699, 251811, 327754, 421398, 491631, 503622, 983262, 1147139, 1474893, 2294278, 2949786, 3441417, 6882834, 10324251, 20648502]

約数ペア:

[(1, 20648502), (2, 10324251), (3, 6882834), (6, 3441417), (7, 2949786), (9, 2294278), (14, 1474893), (18, 1147139), (21, 983262), (41, 503622), (42, 491631), (49, 421398), (63, 327754), (82, 251811), (98, 210699), (123, 167874), (126, 163877), (147, 140466), (246, 83937), (287, 71946), (294, 70233), (369, 55958), (441, 46822), (571, 36162), (574, 35973), (738, 27979), (861, 23982), (882, 23411), (1142, 18081), (1713, 12054), (1722, 11991), (2009, 10278), (2583, 7994), (3426, 6027), (3997, 5166), (4018, 5139)]