28717780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{509}}^1$

素因数の和:569

約数の個数: 96

約数和(自身を含む): 76769280

約数和(自身を除く): 48051500

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 52, 62, 65, 70, 91, 124, 130, 140, 155, 182, 217, 260, 310, 364, 403, 434, 455, 509, 620, 806, 868, 910, 1018, 1085, 1612, 1820, 2015, 2036, 2170, 2545, 2821, 3563, 4030, 4340, 5090, 5642, 6617, 7126, 8060, 10180, 11284, 13234, 14105, 14252, 15779, 17815, 26468, 28210, 31558, 33085, 35630, 46319, 56420, 63116, 66170, 71260, 78895, 92638, 110453, 132340, 157790, 185276, 205127, 220906, 231595, 315580, 410254, 441812, 463190, 552265, 820508, 926380, 1025635, 1104530, 1435889, 2051270, 2209060, 2871778, 4102540, 5743556, 7179445, 14358890, 28717780]

約数ペア:

[(1, 28717780), (2, 14358890), (4, 7179445), (5, 5743556), (7, 4102540), (10, 2871778), (13, 2209060), (14, 2051270), (20, 1435889), (26, 1104530), (28, 1025635), (31, 926380), (35, 820508), (52, 552265), (62, 463190), (65, 441812), (70, 410254), (91, 315580), (124, 231595), (130, 220906), (140, 205127), (155, 185276), (182, 157790), (217, 132340), (260, 110453), (310, 92638), (364, 78895), (403, 71260), (434, 66170), (455, 63116), (509, 56420), (620, 46319), (806, 35630), (868, 33085), (910, 31558), (1018, 28210), (1085, 26468), (1612, 17815), (1820, 15779), (2015, 14252), (2036, 14105), (2170, 13234), (2545, 11284), (2821, 10180), (3563, 8060), (4030, 7126), (4340, 6617), (5090, 5642)]