20017816

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{887}}^1$

素因数の和:944

約数の個数: 64

約数和(自身を含む): 47738880

約数和(自身を除く): 27721064

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 31, 52, 56, 62, 91, 104, 124, 182, 217, 248, 364, 403, 434, 728, 806, 868, 887, 1612, 1736, 1774, 2821, 3224, 3548, 5642, 6209, 7096, 11284, 11531, 12418, 22568, 23062, 24836, 27497, 46124, 49672, 54994, 80717, 92248, 109988, 161434, 192479, 219976, 322868, 357461, 384958, 645736, 714922, 769916, 1429844, 1539832, 2502227, 2859688, 5004454, 10008908, 20017816]

約数ペア:

[(1, 20017816), (2, 10008908), (4, 5004454), (7, 2859688), (8, 2502227), (13, 1539832), (14, 1429844), (26, 769916), (28, 714922), (31, 645736), (52, 384958), (56, 357461), (62, 322868), (91, 219976), (104, 192479), (124, 161434), (182, 109988), (217, 92248), (248, 80717), (364, 54994), (403, 49672), (434, 46124), (728, 27497), (806, 24836), (868, 23062), (887, 22568), (1612, 12418), (1736, 11531), (1774, 11284), (2821, 7096), (3224, 6209), (3548, 5642)]