20213050

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{257}}^1$

素因数の和:304

約数の個数: 72

約数和(自身を含む): 44676828

約数和(自身を除く): 24463778

約数列:

[1, 2, 5, 10, 11, 13, 22, 25, 26, 50, 55, 65, 110, 121, 130, 143, 242, 257, 275, 286, 325, 514, 550, 605, 650, 715, 1210, 1285, 1430, 1573, 2570, 2827, 3025, 3146, 3341, 3575, 5654, 6050, 6425, 6682, 7150, 7865, 12850, 14135, 15730, 16705, 28270, 31097, 33410, 36751, 39325, 62194, 70675, 73502, 78650, 83525, 141350, 155485, 167050, 183755, 310970, 367510, 404261, 777425, 808522, 918775, 1554850, 1837550, 2021305, 4042610, 10106525, 20213050]

約数ペア:

[(1, 20213050), (2, 10106525), (5, 4042610), (10, 2021305), (11, 1837550), (13, 1554850), (22, 918775), (25, 808522), (26, 777425), (50, 404261), (55, 367510), (65, 310970), (110, 183755), (121, 167050), (130, 155485), (143, 141350), (242, 83525), (257, 78650), (275, 73502), (286, 70675), (325, 62194), (514, 39325), (550, 36751), (605, 33410), (650, 31097), (715, 28270), (1210, 16705), (1285, 15730), (1430, 14135), (1573, 12850), (2570, 7865), (2827, 7150), (3025, 6682), (3146, 6425), (3341, 6050), (3575, 5654)]