21714784

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7457}}^1$

素因数の和:7487

約数の個数: 48

約数和(自身を含む): 52623648

約数和(自身を除く): 30908864

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 7457, 14914, 29828, 52199, 59656, 96941, 104398, 119312, 193882, 208796, 238624, 387764, 417592, 678587, 775528, 835184, 1357174, 1551056, 1670368, 2714348, 3102112, 5428696, 10857392, 21714784]

約数ペア:

[(1, 21714784), (2, 10857392), (4, 5428696), (7, 3102112), (8, 2714348), (13, 1670368), (14, 1551056), (16, 1357174), (26, 835184), (28, 775528), (32, 678587), (52, 417592), (56, 387764), (91, 238624), (104, 208796), (112, 193882), (182, 119312), (208, 104398), (224, 96941), (364, 59656), (416, 52199), (728, 29828), (1456, 14914), (2912, 7457)]