21986760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4261}}^1$

素因数の和:4318

約数の個数: 64

約数和(自身を含む): 67510080

約数和(自身を除く): 45523320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 4261, 5160, 8522, 12783, 17044, 21305, 25566, 34088, 42610, 51132, 63915, 85220, 102264, 127830, 170440, 183223, 255660, 366446, 511320, 549669, 732892, 916115, 1099338, 1465784, 1832230, 2198676, 2748345, 3664460, 4397352, 5496690, 7328920, 10993380, 21986760]

約数ペア:

[(1, 21986760), (2, 10993380), (3, 7328920), (4, 5496690), (5, 4397352), (6, 3664460), (8, 2748345), (10, 2198676), (12, 1832230), (15, 1465784), (20, 1099338), (24, 916115), (30, 732892), (40, 549669), (43, 511320), (60, 366446), (86, 255660), (120, 183223), (129, 170440), (172, 127830), (215, 102264), (258, 85220), (344, 63915), (430, 51132), (516, 42610), (645, 34088), (860, 25566), (1032, 21305), (1290, 17044), (1720, 12783), (2580, 8522), (4261, 5160)]