21661038

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{599}}^1$

素因数の和:662

約数の個数: 72

約数和(自身を含む): 56019600

約数和(自身を除く): 34358562

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, 574, 599, 738, 861, 882, 1198, 1722, 1797, 2009, 2583, 3594, 4018, 4193, 5166, 5391, 6027, 8386, 10782, 12054, 12579, 18081, 24559, 25158, 29351, 36162, 37737, 49118, 58702, 73677, 75474, 88053, 147354, 171913, 176106, 221031, 264159, 343826, 442062, 515739, 528318, 1031478, 1203391, 1547217, 2406782, 3094434, 3610173, 7220346, 10830519, 21661038]

約数ペア:

[(1, 21661038), (2, 10830519), (3, 7220346), (6, 3610173), (7, 3094434), (9, 2406782), (14, 1547217), (18, 1203391), (21, 1031478), (41, 528318), (42, 515739), (49, 442062), (63, 343826), (82, 264159), (98, 221031), (123, 176106), (126, 171913), (147, 147354), (246, 88053), (287, 75474), (294, 73677), (369, 58702), (441, 49118), (574, 37737), (599, 36162), (738, 29351), (861, 25158), (882, 24559), (1198, 18081), (1722, 12579), (1797, 12054), (2009, 10782), (2583, 8386), (3594, 6027), (4018, 5391), (4193, 5166)]