21913290

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{4969}}^1$

素因数の和:4996

約数の個数: 72

約数和(自身を含む): 66289860

約数和(自身を除く): 44376570

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 105, 126, 147, 210, 245, 294, 315, 441, 490, 630, 735, 882, 1470, 2205, 4410, 4969, 9938, 14907, 24845, 29814, 34783, 44721, 49690, 69566, 74535, 89442, 104349, 149070, 173915, 208698, 223605, 243481, 313047, 347830, 447210, 486962, 521745, 626094, 730443, 1043490, 1217405, 1460886, 1565235, 2191329, 2434810, 3130470, 3652215, 4382658, 7304430, 10956645, 21913290]

約数ペア:

[(1, 21913290), (2, 10956645), (3, 7304430), (5, 4382658), (6, 3652215), (7, 3130470), (9, 2434810), (10, 2191329), (14, 1565235), (15, 1460886), (18, 1217405), (21, 1043490), (30, 730443), (35, 626094), (42, 521745), (45, 486962), (49, 447210), (63, 347830), (70, 313047), (90, 243481), (98, 223605), (105, 208698), (126, 173915), (147, 149070), (210, 104349), (245, 89442), (294, 74535), (315, 69566), (441, 49690), (490, 44721), (630, 34783), (735, 29814), (882, 24845), (1470, 14907), (2205, 9938), (4410, 4969)]