19464020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 42147840

約数和(自身を除く): 22683820

約数列:

[1, 2, 4, 5, 10, 20, 79, 97, 127, 158, 194, 254, 316, 388, 395, 485, 508, 635, 790, 970, 1270, 1580, 1940, 2540, 7663, 10033, 12319, 15326, 20066, 24638, 30652, 38315, 40132, 49276, 50165, 61595, 76630, 100330, 123190, 153260, 200660, 246380, 973201, 1946402, 3892804, 4866005, 9732010, 19464020]

約数ペア:

[(1, 19464020), (2, 9732010), (4, 4866005), (5, 3892804), (10, 1946402), (20, 973201), (79, 246380), (97, 200660), (127, 153260), (158, 123190), (194, 100330), (254, 76630), (316, 61595), (388, 50165), (395, 49276), (485, 40132), (508, 38315), (635, 30652), (790, 24638), (970, 20066), (1270, 15326), (1580, 12319), (1940, 10033), (2540, 7663)]