19948760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^3\times {\mathrm{227}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 48837600

約数和(自身を除く): 28888840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 227, 260, 338, 454, 520, 676, 845, 908, 1135, 1352, 1690, 1816, 2197, 2270, 2951, 3380, 4394, 4540, 5902, 6760, 8788, 9080, 10985, 11804, 14755, 17576, 21970, 23608, 29510, 38363, 43940, 59020, 76726, 87880, 118040, 153452, 191815, 306904, 383630, 498719, 767260, 997438, 1534520, 1994876, 2493595, 3989752, 4987190, 9974380, 19948760]

約数ペア:

[(1, 19948760), (2, 9974380), (4, 4987190), (5, 3989752), (8, 2493595), (10, 1994876), (13, 1534520), (20, 997438), (26, 767260), (40, 498719), (52, 383630), (65, 306904), (104, 191815), (130, 153452), (169, 118040), (227, 87880), (260, 76726), (338, 59020), (454, 43940), (520, 38363), (676, 29510), (845, 23608), (908, 21970), (1135, 17576), (1352, 14755), (1690, 11804), (1816, 10985), (2197, 9080), (2270, 8788), (2951, 6760), (3380, 5902), (4394, 4540)]