19965420

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{36973}}^1$

素因数の和:36991

約数の個数: 48

約数和(自身を含む): 62116320

約数和(自身を除く): 42150900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 36973, 73946, 110919, 147892, 184865, 221838, 332757, 369730, 443676, 554595, 665514, 739460, 998271, 1109190, 1331028, 1663785, 1996542, 2218380, 3327570, 3993084, 4991355, 6655140, 9982710, 19965420]

約数ペア:

[(1, 19965420), (2, 9982710), (3, 6655140), (4, 4991355), (5, 3993084), (6, 3327570), (9, 2218380), (10, 1996542), (12, 1663785), (15, 1331028), (18, 1109190), (20, 998271), (27, 739460), (30, 665514), (36, 554595), (45, 443676), (54, 369730), (60, 332757), (90, 221838), (108, 184865), (135, 147892), (180, 110919), (270, 73946), (540, 36973)]