19995976

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{227}}^1$

素因数の和:275

約数の個数: 96

約数和(自身を含む): 50944320

約数和(自身を除く): 30948344

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 22, 26, 28, 44, 52, 56, 77, 88, 91, 104, 121, 143, 154, 182, 227, 242, 286, 308, 364, 454, 484, 572, 616, 728, 847, 908, 968, 1001, 1144, 1573, 1589, 1694, 1816, 2002, 2497, 2951, 3146, 3178, 3388, 4004, 4994, 5902, 6292, 6356, 6776, 8008, 9988, 11011, 11804, 12584, 12712, 17479, 19976, 20657, 22022, 23608, 27467, 32461, 34958, 41314, 44044, 54934, 64922, 69916, 82628, 88088, 109868, 129844, 139832, 165256, 192269, 219736, 227227, 259688, 357071, 384538, 454454, 714142, 769076, 908908, 1428284, 1538152, 1817816, 2499497, 2856568, 4998994, 9997988, 19995976]

約数ペア:

[(1, 19995976), (2, 9997988), (4, 4998994), (7, 2856568), (8, 2499497), (11, 1817816), (13, 1538152), (14, 1428284), (22, 908908), (26, 769076), (28, 714142), (44, 454454), (52, 384538), (56, 357071), (77, 259688), (88, 227227), (91, 219736), (104, 192269), (121, 165256), (143, 139832), (154, 129844), (182, 109868), (227, 88088), (242, 82628), (286, 69916), (308, 64922), (364, 54934), (454, 44044), (484, 41314), (572, 34958), (616, 32461), (728, 27467), (847, 23608), (908, 22022), (968, 20657), (1001, 19976), (1144, 17479), (1573, 12712), (1589, 12584), (1694, 11804), (1816, 11011), (2002, 9988), (2497, 8008), (2951, 6776), (3146, 6356), (3178, 6292), (3388, 5902), (4004, 4994)]