28105220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{317}}^1$

素因数の和:381

約数の個数: 96

約数和(自身を含む): 71801856

約数和(自身を除く): 43696636

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 31, 44, 52, 55, 62, 65, 110, 124, 130, 143, 155, 220, 260, 286, 310, 317, 341, 403, 572, 620, 634, 682, 715, 806, 1268, 1364, 1430, 1585, 1612, 1705, 2015, 2860, 3170, 3410, 3487, 4030, 4121, 4433, 6340, 6820, 6974, 8060, 8242, 8866, 9827, 13948, 16484, 17435, 17732, 19654, 20605, 22165, 34870, 39308, 41210, 44330, 45331, 49135, 69740, 82420, 88660, 90662, 98270, 108097, 127751, 181324, 196540, 216194, 226655, 255502, 432388, 453310, 511004, 540485, 638755, 906620, 1080970, 1277510, 1405261, 2161940, 2555020, 2810522, 5621044, 7026305, 14052610, 28105220]

約数ペア:

[(1, 28105220), (2, 14052610), (4, 7026305), (5, 5621044), (10, 2810522), (11, 2555020), (13, 2161940), (20, 1405261), (22, 1277510), (26, 1080970), (31, 906620), (44, 638755), (52, 540485), (55, 511004), (62, 453310), (65, 432388), (110, 255502), (124, 226655), (130, 216194), (143, 196540), (155, 181324), (220, 127751), (260, 108097), (286, 98270), (310, 90662), (317, 88660), (341, 82420), (403, 69740), (572, 49135), (620, 45331), (634, 44330), (682, 41210), (715, 39308), (806, 34870), (1268, 22165), (1364, 20605), (1430, 19654), (1585, 17732), (1612, 17435), (1705, 16484), (2015, 13948), (2860, 9827), (3170, 8866), (3410, 8242), (3487, 8060), (4030, 6974), (4121, 6820), (4433, 6340)]