20680160

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7603}}^1$

素因数の和:7635

約数の個数: 48

約数和(自身を含む): 51737616

約数和(自身を除く): 31057456

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, 7603, 15206, 30412, 38015, 60824, 76030, 121648, 129251, 152060, 243296, 258502, 304120, 517004, 608240, 646255, 1034008, 1216480, 1292510, 2068016, 2585020, 4136032, 5170040, 10340080, 20680160]

約数ペア:

[(1, 20680160), (2, 10340080), (4, 5170040), (5, 4136032), (8, 2585020), (10, 2068016), (16, 1292510), (17, 1216480), (20, 1034008), (32, 646255), (34, 608240), (40, 517004), (68, 304120), (80, 258502), (85, 243296), (136, 152060), (160, 129251), (170, 121648), (272, 76030), (340, 60824), (544, 38015), (680, 30412), (1360, 15206), (2720, 7603)]