20330380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7643}}^1$

素因数の和:7678

約数の個数: 48

約数和(自身を含む): 51367680

約数和(自身を除く): 31037300

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 7643, 15286, 30572, 38215, 53501, 76430, 107002, 145217, 152860, 214004, 267505, 290434, 535010, 580868, 726085, 1016519, 1070020, 1452170, 2033038, 2904340, 4066076, 5082595, 10165190, 20330380]

約数ペア:

[(1, 20330380), (2, 10165190), (4, 5082595), (5, 4066076), (7, 2904340), (10, 2033038), (14, 1452170), (19, 1070020), (20, 1016519), (28, 726085), (35, 580868), (38, 535010), (70, 290434), (76, 267505), (95, 214004), (133, 152860), (140, 145217), (190, 107002), (266, 76430), (380, 53501), (532, 38215), (665, 30572), (1330, 15286), (2660, 7643)]