21088160

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7753}}^1$

素因数の和:7785

約数の個数: 48

約数和(自身を含む): 52758216

約数和(自身を除く): 31670056

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, 7753, 15506, 31012, 38765, 62024, 77530, 124048, 131801, 155060, 248096, 263602, 310120, 527204, 620240, 659005, 1054408, 1240480, 1318010, 2108816, 2636020, 4217632, 5272040, 10544080, 21088160]

約数ペア:

[(1, 21088160), (2, 10544080), (4, 5272040), (5, 4217632), (8, 2636020), (10, 2108816), (16, 1318010), (17, 1240480), (20, 1054408), (32, 659005), (34, 620240), (40, 527204), (68, 310120), (80, 263602), (85, 248096), (136, 155060), (160, 131801), (170, 124048), (272, 77530), (340, 62024), (544, 38765), (680, 31012), (1360, 15506), (2720, 7753)]