19903440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{653}}^1$

素因数の和:796

約数の個数: 80

約数和(自身を含む): 62281728

約数和(自身を除く): 42378288

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 127, 240, 254, 381, 508, 635, 653, 762, 1016, 1270, 1306, 1524, 1905, 1959, 2032, 2540, 2612, 3048, 3265, 3810, 3918, 5080, 5224, 6096, 6530, 7620, 7836, 9795, 10160, 10448, 13060, 15240, 15672, 19590, 26120, 30480, 31344, 39180, 52240, 78360, 82931, 156720, 165862, 248793, 331724, 414655, 497586, 663448, 829310, 995172, 1243965, 1326896, 1658620, 1990344, 2487930, 3317240, 3980688, 4975860, 6634480, 9951720, 19903440]

約数ペア:

[(1, 19903440), (2, 9951720), (3, 6634480), (4, 4975860), (5, 3980688), (6, 3317240), (8, 2487930), (10, 1990344), (12, 1658620), (15, 1326896), (16, 1243965), (20, 995172), (24, 829310), (30, 663448), (40, 497586), (48, 414655), (60, 331724), (80, 248793), (120, 165862), (127, 156720), (240, 82931), (254, 78360), (381, 52240), (508, 39180), (635, 31344), (653, 30480), (762, 26120), (1016, 19590), (1270, 15672), (1306, 15240), (1524, 13060), (1905, 10448), (1959, 10160), (2032, 9795), (2540, 7836), (2612, 7620), (3048, 6530), (3265, 6096), (3810, 5224), (3918, 5080)]