28485860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{331}}^2$

素因数の和:684

約数の個数: 36

約数和(自身を含む): 64617084

約数和(自身を除く): 36131224

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 331, 662, 1324, 1655, 3310, 4303, 6620, 8606, 17212, 21515, 43030, 86060, 109561, 219122, 438244, 547805, 1095610, 1424293, 2191220, 2848586, 5697172, 7121465, 14242930, 28485860]

約数ペア:

[(1, 28485860), (2, 14242930), (4, 7121465), (5, 5697172), (10, 2848586), (13, 2191220), (20, 1424293), (26, 1095610), (52, 547805), (65, 438244), (130, 219122), (260, 109561), (331, 86060), (662, 43030), (1324, 21515), (1655, 17212), (3310, 8606), (4303, 6620)]