21535690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 45048960

約数和(自身を除く): 23513270

約数列:

[1, 2, 5, 10, 11, 22, 29, 43, 55, 58, 86, 110, 145, 157, 215, 290, 314, 319, 430, 473, 638, 785, 946, 1247, 1570, 1595, 1727, 2365, 2494, 3190, 3454, 4553, 4730, 6235, 6751, 8635, 9106, 12470, 13502, 13717, 17270, 22765, 27434, 33755, 45530, 50083, 67510, 68585, 74261, 100166, 137170, 148522, 195779, 250415, 371305, 391558, 500830, 742610, 978895, 1957790, 2153569, 4307138, 10767845, 21535690]

約数ペア:

[(1, 21535690), (2, 10767845), (5, 4307138), (10, 2153569), (11, 1957790), (22, 978895), (29, 742610), (43, 500830), (55, 391558), (58, 371305), (86, 250415), (110, 195779), (145, 148522), (157, 137170), (215, 100166), (290, 74261), (314, 68585), (319, 67510), (430, 50083), (473, 45530), (638, 33755), (785, 27434), (946, 22765), (1247, 17270), (1570, 13717), (1595, 13502), (1727, 12470), (2365, 9106), (2494, 8635), (3190, 6751), (3454, 6235), (4553, 4730)]