21228075

素因数分解:

$3^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{953}}^1$

素因数の和:986

約数の個数: 60

約数和(自身を含む): 42941448

約数和(自身を除く): 21713373

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 33, 45, 55, 75, 81, 99, 135, 165, 225, 275, 297, 405, 495, 675, 825, 891, 953, 1485, 2025, 2475, 2859, 4455, 4765, 7425, 8577, 10483, 14295, 22275, 23825, 25731, 31449, 42885, 52415, 71475, 77193, 94347, 128655, 157245, 214425, 262075, 283041, 385965, 471735, 643275, 786225, 849123, 1415205, 1929825, 2358675, 4245615, 7076025, 21228075]

約数ペア:

[(1, 21228075), (3, 7076025), (5, 4245615), (9, 2358675), (11, 1929825), (15, 1415205), (25, 849123), (27, 786225), (33, 643275), (45, 471735), (55, 385965), (75, 283041), (81, 262075), (99, 214425), (135, 157245), (165, 128655), (225, 94347), (275, 77193), (297, 71475), (405, 52415), (495, 42885), (675, 31449), (825, 25731), (891, 23825), (953, 22275), (1485, 14295), (2025, 10483), (2475, 8577), (2859, 7425), (4455, 4765)]