19613920

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7211}}^1$

素因数の和:7243

約数の個数: 48

約数和(自身を含む): 49070448

約数和(自身を除く): 29456528

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7211, 14422, 28844, 36055, 57688, 72110, 115376, 122587, 144220, 230752, 245174, 288440, 490348, 576880, 612935, 980696, 1153760, 1225870, 1961392, 2451740, 3922784, 4903480, 9806960, 19613920]

約数ペア:

[(1, 19613920), (2, 9806960), (4, 4903480), (5, 3922784), (8, 2451740), (10, 1961392), (16, 1225870), (17, 1153760), (20, 980696), (32, 612935), (34, 576880), (40, 490348), (68, 288440), (80, 245174), (85, 230752), (136, 144220), (160, 122587), (170, 115376), (272, 72110), (340, 57688), (544, 36055), (680, 28844), (1360, 14422), (2720, 7211)]