21201435

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 39180960

約数和(自身を除く): 17979525

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 137, 171, 181, 285, 411, 543, 685, 855, 905, 1233, 1629, 2055, 2603, 2715, 3439, 6165, 7809, 8145, 10317, 13015, 17195, 23427, 24797, 30951, 39045, 51585, 74391, 117135, 123985, 154755, 223173, 371955, 471143, 1115865, 1413429, 2355715, 4240287, 7067145, 21201435]

約数ペア:

[(1, 21201435), (3, 7067145), (5, 4240287), (9, 2355715), (15, 1413429), (19, 1115865), (45, 471143), (57, 371955), (95, 223173), (137, 154755), (171, 123985), (181, 117135), (285, 74391), (411, 51585), (543, 39045), (685, 30951), (855, 24797), (905, 23427), (1233, 17195), (1629, 13015), (2055, 10317), (2603, 8145), (2715, 7809), (3439, 6165)]