21761270

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2161}}^1$

素因数の和:2240

約数の個数: 32

約数和(自身を含む): 42029280

約数和(自身を除く): 20268010

約数列:

[1, 2, 5, 10, 19, 38, 53, 95, 106, 190, 265, 530, 1007, 2014, 2161, 4322, 5035, 10070, 10805, 21610, 41059, 82118, 114533, 205295, 229066, 410590, 572665, 1145330, 2176127, 4352254, 10880635, 21761270]

約数ペア:

[(1, 21761270), (2, 10880635), (5, 4352254), (10, 2176127), (19, 1145330), (38, 572665), (53, 410590), (95, 229066), (106, 205295), (190, 114533), (265, 82118), (530, 41059), (1007, 21610), (2014, 10805), (2161, 10070), (4322, 5035)]