81388580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{227}}^1$

素因数の和:453

約数の個数: 96

約数和(自身を含む): 212357376

約数和(自身を除く): 130968796

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 197, 227, 260, 364, 394, 454, 455, 788, 908, 910, 985, 1135, 1379, 1589, 1820, 1970, 2270, 2561, 2758, 2951, 3178, 3940, 4540, 5122, 5516, 5902, 6356, 6895, 7945, 10244, 11804, 12805, 13790, 14755, 15890, 17927, 20657, 25610, 27580, 29510, 31780, 35854, 41314, 44719, 51220, 59020, 71708, 82628, 89438, 89635, 103285, 178876, 179270, 206570, 223595, 313033, 358540, 413140, 447190, 581347, 626066, 894380, 1162694, 1252132, 1565165, 2325388, 2906735, 3130330, 4069429, 5813470, 6260660, 8138858, 11626940, 16277716, 20347145, 40694290, 81388580]

約数ペア:

[(1, 81388580), (2, 40694290), (4, 20347145), (5, 16277716), (7, 11626940), (10, 8138858), (13, 6260660), (14, 5813470), (20, 4069429), (26, 3130330), (28, 2906735), (35, 2325388), (52, 1565165), (65, 1252132), (70, 1162694), (91, 894380), (130, 626066), (140, 581347), (182, 447190), (197, 413140), (227, 358540), (260, 313033), (364, 223595), (394, 206570), (454, 179270), (455, 178876), (788, 103285), (908, 89635), (910, 89438), (985, 82628), (1135, 71708), (1379, 59020), (1589, 51220), (1820, 44719), (1970, 41314), (2270, 35854), (2561, 31780), (2758, 29510), (2951, 27580), (3178, 25610), (3940, 20657), (4540, 17927), (5122, 15890), (5516, 14755), (5902, 13790), (6356, 12805), (6895, 11804), (7945, 10244)]