21620770

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1429}}^1$

素因数の和:1542

約数の個数: 32

約数和(自身を含む): 41698800

約数和(自身を除く): 20078030

約数列:

[1, 2, 5, 10, 17, 34, 85, 89, 170, 178, 445, 890, 1429, 1513, 2858, 3026, 7145, 7565, 14290, 15130, 24293, 48586, 121465, 127181, 242930, 254362, 635905, 1271810, 2162077, 4324154, 10810385, 21620770]

約数ペア:

[(1, 21620770), (2, 10810385), (5, 4324154), (10, 2162077), (17, 1271810), (34, 635905), (85, 254362), (89, 242930), (170, 127181), (178, 121465), (445, 48586), (890, 24293), (1429, 15130), (1513, 14290), (2858, 7565), (3026, 7145)]