20964128

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{433}}^1$

素因数の和:549

約数の個数: 48

約数和(自身を含む): 44294040

約数和(自身を除く): 23329912

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 89, 136, 178, 272, 356, 433, 544, 712, 866, 1424, 1513, 1732, 2848, 3026, 3464, 6052, 6928, 7361, 12104, 13856, 14722, 24208, 29444, 38537, 48416, 58888, 77074, 117776, 154148, 235552, 308296, 616592, 655129, 1233184, 1310258, 2620516, 5241032, 10482064, 20964128]

約数ペア:

[(1, 20964128), (2, 10482064), (4, 5241032), (8, 2620516), (16, 1310258), (17, 1233184), (32, 655129), (34, 616592), (68, 308296), (89, 235552), (136, 154148), (178, 117776), (272, 77074), (356, 58888), (433, 48416), (544, 38537), (712, 29444), (866, 24208), (1424, 14722), (1513, 13856), (1732, 12104), (2848, 7361), (3026, 6928), (3464, 6052)]