21783720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25933}}^1$

素因数の和:25954

約数の個数: 64

約数和(自身を含む): 74689920

約数和(自身を除く): 52906200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25933, 51866, 77799, 103732, 129665, 155598, 181531, 207464, 259330, 311196, 363062, 388995, 518660, 544593, 622392, 726124, 777990, 907655, 1037320, 1089186, 1452248, 1555980, 1815310, 2178372, 2722965, 3111960, 3630620, 4356744, 5445930, 7261240, 10891860, 21783720]

約数ペア:

[(1, 21783720), (2, 10891860), (3, 7261240), (4, 5445930), (5, 4356744), (6, 3630620), (7, 3111960), (8, 2722965), (10, 2178372), (12, 1815310), (14, 1555980), (15, 1452248), (20, 1089186), (21, 1037320), (24, 907655), (28, 777990), (30, 726124), (35, 622392), (40, 544593), (42, 518660), (56, 388995), (60, 363062), (70, 311196), (84, 259330), (105, 207464), (120, 181531), (140, 155598), (168, 129665), (210, 103732), (280, 77799), (420, 51866), (840, 25933)]