28786940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15817}}^1$

素因数の和:15846

約数の個数: 48

約数和(自身を含む): 74407872

約数和(自身を除く): 45620932

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 15817, 31634, 63268, 79085, 110719, 158170, 205621, 221438, 316340, 411242, 442876, 553595, 822484, 1028105, 1107190, 1439347, 2056210, 2214380, 2878694, 4112420, 5757388, 7196735, 14393470, 28786940]

約数ペア:

[(1, 28786940), (2, 14393470), (4, 7196735), (5, 5757388), (7, 4112420), (10, 2878694), (13, 2214380), (14, 2056210), (20, 1439347), (26, 1107190), (28, 1028105), (35, 822484), (52, 553595), (65, 442876), (70, 411242), (91, 316340), (130, 221438), (140, 205621), (182, 158170), (260, 110719), (364, 79085), (455, 63268), (910, 31634), (1820, 15817)]