28741960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1783}}^1$

素因数の和:1838

約数の個数: 64

約数和(自身を含む): 71930880

約数和(自身を除く): 43188920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 1783, 2015, 3224, 3566, 4030, 7132, 8060, 8915, 14264, 16120, 17830, 23179, 35660, 46358, 55273, 71320, 92716, 110546, 115895, 185432, 221092, 231790, 276365, 442184, 463580, 552730, 718549, 927160, 1105460, 1437098, 2210920, 2874196, 3592745, 5748392, 7185490, 14370980, 28741960]

約数ペア:

[(1, 28741960), (2, 14370980), (4, 7185490), (5, 5748392), (8, 3592745), (10, 2874196), (13, 2210920), (20, 1437098), (26, 1105460), (31, 927160), (40, 718549), (52, 552730), (62, 463580), (65, 442184), (104, 276365), (124, 231790), (130, 221092), (155, 185432), (248, 115895), (260, 110546), (310, 92716), (403, 71320), (520, 55273), (620, 46358), (806, 35660), (1240, 23179), (1612, 17830), (1783, 16120), (2015, 14264), (3224, 8915), (3566, 8060), (4030, 7132)]