21601242

素因数分解:

$2^1\times 3^5\times {\mathrm{13}}^2\times {\mathrm{263}}^1$

素因数の和:306

約数の個数: 72

約数和(自身を含む): 52756704

約数和(自身を除く): 31155462

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 81, 117, 162, 169, 234, 243, 263, 338, 351, 486, 507, 526, 702, 789, 1014, 1053, 1521, 1578, 2106, 2367, 3042, 3159, 3419, 4563, 4734, 6318, 6838, 7101, 9126, 10257, 13689, 14202, 20514, 21303, 27378, 30771, 41067, 42606, 44447, 61542, 63909, 82134, 88894, 92313, 127818, 133341, 184626, 266682, 276939, 400023, 553878, 800046, 830817, 1200069, 1661634, 2400138, 3600207, 7200414, 10800621, 21601242]

約数ペア:

[(1, 21601242), (2, 10800621), (3, 7200414), (6, 3600207), (9, 2400138), (13, 1661634), (18, 1200069), (26, 830817), (27, 800046), (39, 553878), (54, 400023), (78, 276939), (81, 266682), (117, 184626), (162, 133341), (169, 127818), (234, 92313), (243, 88894), (263, 82134), (338, 63909), (351, 61542), (486, 44447), (507, 42606), (526, 41067), (702, 30771), (789, 27378), (1014, 21303), (1053, 20514), (1521, 14202), (1578, 13689), (2106, 10257), (2367, 9126), (3042, 7101), (3159, 6838), (3419, 6318), (4563, 4734)]