21996112

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{727}}^1$

素因数の和:827

約数の個数: 40

約数和(自身を含む): 44774912

約数和(自身を除く): 22778800

約数列:

[1, 2, 4, 8, 16, 31, 61, 62, 122, 124, 244, 248, 488, 496, 727, 976, 1454, 1891, 2908, 3782, 5816, 7564, 11632, 15128, 22537, 30256, 44347, 45074, 88694, 90148, 177388, 180296, 354776, 360592, 709552, 1374757, 2749514, 5499028, 10998056, 21996112]

約数ペア:

[(1, 21996112), (2, 10998056), (4, 5499028), (8, 2749514), (16, 1374757), (31, 709552), (61, 360592), (62, 354776), (122, 180296), (124, 177388), (244, 90148), (248, 88694), (488, 45074), (496, 44347), (727, 30256), (976, 22537), (1454, 15128), (1891, 11632), (2908, 7564), (3782, 5816)]