20561344

素因数分解:

$2^6\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{457}}^1$

素因数の和:525

約数の個数: 56

約数和(自身を含む): 44206160

約数和(自身を除く): 23644816

約数列:

[1, 2, 4, 8, 16, 19, 32, 37, 38, 64, 74, 76, 148, 152, 296, 304, 457, 592, 608, 703, 914, 1184, 1216, 1406, 1828, 2368, 2812, 3656, 5624, 7312, 8683, 11248, 14624, 16909, 17366, 22496, 29248, 33818, 34732, 44992, 67636, 69464, 135272, 138928, 270544, 277856, 321271, 541088, 555712, 642542, 1082176, 1285084, 2570168, 5140336, 10280672, 20561344]

約数ペア:

[(1, 20561344), (2, 10280672), (4, 5140336), (8, 2570168), (16, 1285084), (19, 1082176), (32, 642542), (37, 555712), (38, 541088), (64, 321271), (74, 277856), (76, 270544), (148, 138928), (152, 135272), (296, 69464), (304, 67636), (457, 44992), (592, 34732), (608, 33818), (703, 29248), (914, 22496), (1184, 17366), (1216, 16909), (1406, 14624), (1828, 11248), (2368, 8683), (2812, 7312), (3656, 5624)]