21183525

素因数分解:

$3^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{317}}^1$

素因数の和:353

約数の個数: 72

約数和(自身を含む): 43059744

約数和(自身を除く): 21876219

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 33, 45, 55, 75, 81, 99, 135, 165, 225, 243, 275, 297, 317, 405, 495, 675, 825, 891, 951, 1215, 1485, 1585, 2025, 2475, 2673, 2853, 3487, 4455, 4755, 6075, 7425, 7925, 8559, 10461, 13365, 14265, 17435, 22275, 23775, 25677, 31383, 42795, 52305, 66825, 71325, 77031, 87175, 94149, 128385, 156915, 213975, 261525, 282447, 385155, 470745, 641925, 784575, 847341, 1412235, 1925775, 2353725, 4236705, 7061175, 21183525]

約数ペア:

[(1, 21183525), (3, 7061175), (5, 4236705), (9, 2353725), (11, 1925775), (15, 1412235), (25, 847341), (27, 784575), (33, 641925), (45, 470745), (55, 385155), (75, 282447), (81, 261525), (99, 213975), (135, 156915), (165, 128385), (225, 94149), (243, 87175), (275, 77031), (297, 71325), (317, 66825), (405, 52305), (495, 42795), (675, 31383), (825, 25677), (891, 23775), (951, 22275), (1215, 17435), (1485, 14265), (1585, 13365), (2025, 10461), (2475, 8559), (2673, 7925), (2853, 7425), (3487, 6075), (4455, 4755)]