21109376

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:229

約数の個数: 64

約数和(自身を含む): 45441000

約数和(自身を除く): 24331624

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 89, 109, 128, 136, 178, 218, 272, 356, 436, 544, 712, 872, 1088, 1424, 1513, 1744, 1853, 2176, 2848, 3026, 3488, 3706, 5696, 6052, 6976, 7412, 9701, 11392, 12104, 13952, 14824, 19402, 24208, 29648, 38804, 48416, 59296, 77608, 96832, 118592, 155216, 164917, 193664, 237184, 310432, 329834, 620864, 659668, 1241728, 1319336, 2638672, 5277344, 10554688, 21109376]

約数ペア:

[(1, 21109376), (2, 10554688), (4, 5277344), (8, 2638672), (16, 1319336), (17, 1241728), (32, 659668), (34, 620864), (64, 329834), (68, 310432), (89, 237184), (109, 193664), (128, 164917), (136, 155216), (178, 118592), (218, 96832), (272, 77608), (356, 59296), (436, 48416), (544, 38804), (712, 29648), (872, 24208), (1088, 19402), (1424, 14824), (1513, 13952), (1744, 12104), (1853, 11392), (2176, 9701), (2848, 7412), (3026, 6976), (3488, 6052), (3706, 5696)]