21710640

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12923}}^1$

素因数の和:12946

約数の個数: 80

約数和(自身を含む): 76923648

約数和(自身を除く): 55213008

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12923, 25846, 38769, 51692, 64615, 77538, 90461, 103384, 129230, 155076, 180922, 193845, 206768, 258460, 271383, 310152, 361844, 387690, 452305, 516920, 542766, 620304, 723688, 775380, 904610, 1033840, 1085532, 1356915, 1447376, 1550760, 1809220, 2171064, 2713830, 3101520, 3618440, 4342128, 5427660, 7236880, 10855320, 21710640]

約数ペア:

[(1, 21710640), (2, 10855320), (3, 7236880), (4, 5427660), (5, 4342128), (6, 3618440), (7, 3101520), (8, 2713830), (10, 2171064), (12, 1809220), (14, 1550760), (15, 1447376), (16, 1356915), (20, 1085532), (21, 1033840), (24, 904610), (28, 775380), (30, 723688), (35, 620304), (40, 542766), (42, 516920), (48, 452305), (56, 387690), (60, 361844), (70, 310152), (80, 271383), (84, 258460), (105, 206768), (112, 193845), (120, 180922), (140, 155076), (168, 129230), (210, 103384), (240, 90461), (280, 77538), (336, 64615), (420, 51692), (560, 38769), (840, 25846), (1680, 12923)]