21584475

素因数分解:

$3^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:72

約数の個数: 144

約数和(自身を含む): 48746880

約数和(自身を除く): 27162405

約数列:

[1, 3, 5, 9, 11, 15, 17, 19, 25, 27, 33, 45, 51, 55, 57, 75, 81, 85, 95, 99, 135, 153, 165, 171, 187, 209, 225, 243, 255, 275, 285, 297, 323, 405, 425, 459, 475, 495, 513, 561, 627, 675, 765, 825, 855, 891, 935, 969, 1045, 1215, 1275, 1377, 1425, 1485, 1539, 1615, 1683, 1881, 2025, 2295, 2475, 2565, 2673, 2805, 2907, 3135, 3553, 3825, 4131, 4275, 4455, 4617, 4675, 4845, 5049, 5225, 5643, 6075, 6885, 7425, 7695, 8075, 8415, 8721, 9405, 10659, 11475, 12825, 13365, 14025, 14535, 15147, 15675, 16929, 17765, 20655, 22275, 23085, 24225, 25245, 26163, 28215, 31977, 34425, 38475, 42075, 43605, 45441, 47025, 50787, 53295, 66825, 72675, 75735, 78489, 84645, 88825, 95931, 103275, 115425, 126225, 130815, 141075, 159885, 218025, 227205, 253935, 266475, 287793, 378675, 392445, 423225, 479655, 654075, 799425, 863379, 1136025, 1269675, 1438965, 1962225, 2398275, 4316895, 7194825, 21584475]

約数ペア:

[(1, 21584475), (3, 7194825), (5, 4316895), (9, 2398275), (11, 1962225), (15, 1438965), (17, 1269675), (19, 1136025), (25, 863379), (27, 799425), (33, 654075), (45, 479655), (51, 423225), (55, 392445), (57, 378675), (75, 287793), (81, 266475), (85, 253935), (95, 227205), (99, 218025), (135, 159885), (153, 141075), (165, 130815), (171, 126225), (187, 115425), (209, 103275), (225, 95931), (243, 88825), (255, 84645), (275, 78489), (285, 75735), (297, 72675), (323, 66825), (405, 53295), (425, 50787), (459, 47025), (475, 45441), (495, 43605), (513, 42075), (561, 38475), (627, 34425), (675, 31977), (765, 28215), (825, 26163), (855, 25245), (891, 24225), (935, 23085), (969, 22275), (1045, 20655), (1215, 17765), (1275, 16929), (1377, 15675), (1425, 15147), (1485, 14535), (1539, 14025), (1615, 13365), (1683, 12825), (1881, 11475), (2025, 10659), (2295, 9405), (2475, 8721), (2565, 8415), (2673, 8075), (2805, 7695), (2907, 7425), (3135, 6885), (3553, 6075), (3825, 5643), (4131, 5225), (4275, 5049), (4455, 4845), (4617, 4675)]