21970130

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3449}}^1$

素因数の和:3483

約数の個数: 48

約数和(自身を含む): 49555800

約数和(自身を除く): 27585670

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 455, 490, 637, 910, 1274, 3185, 3449, 6370, 6898, 17245, 24143, 34490, 44837, 48286, 89674, 120715, 169001, 224185, 241430, 313859, 338002, 448370, 627718, 845005, 1569295, 1690010, 2197013, 3138590, 4394026, 10985065, 21970130]

約数ペア:

[(1, 21970130), (2, 10985065), (5, 4394026), (7, 3138590), (10, 2197013), (13, 1690010), (14, 1569295), (26, 845005), (35, 627718), (49, 448370), (65, 338002), (70, 313859), (91, 241430), (98, 224185), (130, 169001), (182, 120715), (245, 89674), (455, 48286), (490, 44837), (637, 34490), (910, 24143), (1274, 17245), (3185, 6898), (3449, 6370)]