21982580

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1\times {\mathrm{251}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 26280460

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 151, 251, 290, 302, 502, 580, 604, 755, 1004, 1255, 1510, 2510, 3020, 4379, 5020, 7279, 8758, 14558, 17516, 21895, 29116, 36395, 37901, 43790, 72790, 75802, 87580, 145580, 151604, 189505, 379010, 758020, 1099129, 2198258, 4396516, 5495645, 10991290, 21982580]

約数ペア:

[(1, 21982580), (2, 10991290), (4, 5495645), (5, 4396516), (10, 2198258), (20, 1099129), (29, 758020), (58, 379010), (116, 189505), (145, 151604), (151, 145580), (251, 87580), (290, 75802), (302, 72790), (502, 43790), (580, 37901), (604, 36395), (755, 29116), (1004, 21895), (1255, 17516), (1510, 14558), (2510, 8758), (3020, 7279), (4379, 5020)]