20409116

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{227}}^1$

素因数の和:283

約数の個数: 72

約数和(自身を含む): 46730880

約数和(自身を除く): 26321764

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 52, 76, 91, 133, 169, 182, 227, 247, 266, 338, 364, 454, 494, 532, 676, 908, 988, 1183, 1589, 1729, 2366, 2951, 3178, 3211, 3458, 4313, 4732, 5902, 6356, 6422, 6916, 8626, 11804, 12844, 17252, 20657, 22477, 30191, 38363, 41314, 44954, 56069, 60382, 76726, 82628, 89908, 112138, 120764, 153452, 224276, 268541, 392483, 537082, 728897, 784966, 1074164, 1457794, 1569932, 2915588, 5102279, 10204558, 20409116]

約数ペア:

[(1, 20409116), (2, 10204558), (4, 5102279), (7, 2915588), (13, 1569932), (14, 1457794), (19, 1074164), (26, 784966), (28, 728897), (38, 537082), (52, 392483), (76, 268541), (91, 224276), (133, 153452), (169, 120764), (182, 112138), (227, 89908), (247, 82628), (266, 76726), (338, 60382), (364, 56069), (454, 44954), (494, 41314), (532, 38363), (676, 30191), (908, 22477), (988, 20657), (1183, 17252), (1589, 12844), (1729, 11804), (2366, 8626), (2951, 6916), (3178, 6422), (3211, 6356), (3458, 5902), (4313, 4732)]