20920890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{173}}^1$

素因数の和:351

約数の個数: 64

約数和(自身を含む): 52617600

約数和(自身を除く): 31696710

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 139, 145, 173, 174, 278, 290, 346, 417, 435, 519, 695, 834, 865, 870, 1038, 1390, 1730, 2085, 2595, 4031, 4170, 5017, 5190, 8062, 10034, 12093, 15051, 20155, 24047, 24186, 25085, 30102, 40310, 48094, 50170, 60465, 72141, 75255, 120235, 120930, 144282, 150510, 240470, 360705, 697363, 721410, 1394726, 2092089, 3486815, 4184178, 6973630, 10460445, 20920890]

約数ペア:

[(1, 20920890), (2, 10460445), (3, 6973630), (5, 4184178), (6, 3486815), (10, 2092089), (15, 1394726), (29, 721410), (30, 697363), (58, 360705), (87, 240470), (139, 150510), (145, 144282), (173, 120930), (174, 120235), (278, 75255), (290, 72141), (346, 60465), (417, 50170), (435, 48094), (519, 40310), (695, 30102), (834, 25085), (865, 24186), (870, 24047), (1038, 20155), (1390, 15051), (1730, 12093), (2085, 10034), (2595, 8062), (4031, 5190), (4170, 5017)]