21552075

素因数分解:

$3^4\times 5^2\times {\mathrm{29}}^1\times {\mathrm{367}}^1$

素因数の和:418

約数の個数: 60

約数和(自身を含む): 41411040

約数和(自身を除く): 19858965

約数列:

[1, 3, 5, 9, 15, 25, 27, 29, 45, 75, 81, 87, 135, 145, 225, 261, 367, 405, 435, 675, 725, 783, 1101, 1305, 1835, 2025, 2175, 2349, 3303, 3915, 5505, 6525, 9175, 9909, 10643, 11745, 16515, 19575, 27525, 29727, 31929, 49545, 53215, 58725, 82575, 95787, 148635, 159645, 247725, 266075, 287361, 478935, 743175, 798225, 862083, 1436805, 2394675, 4310415, 7184025, 21552075]

約数ペア:

[(1, 21552075), (3, 7184025), (5, 4310415), (9, 2394675), (15, 1436805), (25, 862083), (27, 798225), (29, 743175), (45, 478935), (75, 287361), (81, 266075), (87, 247725), (135, 159645), (145, 148635), (225, 95787), (261, 82575), (367, 58725), (405, 53215), (435, 49545), (675, 31929), (725, 29727), (783, 27525), (1101, 19575), (1305, 16515), (1835, 11745), (2025, 10643), (2175, 9909), (2349, 9175), (3303, 6525), (3915, 5505)]