20421590

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{131}}^2$

素因数の和:293

約数の個数: 48

約数和(自身を含む): 44823456

約数和(自身を除く): 24401866

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 70, 85, 119, 131, 170, 238, 262, 595, 655, 917, 1190, 1310, 1834, 2227, 4454, 4585, 9170, 11135, 15589, 17161, 22270, 31178, 34322, 77945, 85805, 120127, 155890, 171610, 240254, 291737, 583474, 600635, 1201270, 1458685, 2042159, 2917370, 4084318, 10210795, 20421590]

約数ペア:

[(1, 20421590), (2, 10210795), (5, 4084318), (7, 2917370), (10, 2042159), (14, 1458685), (17, 1201270), (34, 600635), (35, 583474), (70, 291737), (85, 240254), (119, 171610), (131, 155890), (170, 120127), (238, 85805), (262, 77945), (595, 34322), (655, 31178), (917, 22270), (1190, 17161), (1310, 15589), (1834, 11135), (2227, 9170), (4454, 4585)]