28980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{23}}^1$

素因数の和:45

約数の個数: 72

約数和(自身を含む): 104832

約数和(自身を除く): 75852

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 23, 28, 30, 35, 36, 42, 45, 46, 60, 63, 69, 70, 84, 90, 92, 105, 115, 126, 138, 140, 161, 180, 207, 210, 230, 252, 276, 315, 322, 345, 414, 420, 460, 483, 630, 644, 690, 805, 828, 966, 1035, 1260, 1380, 1449, 1610, 1932, 2070, 2415, 2898, 3220, 4140, 4830, 5796, 7245, 9660, 14490, 28980]

約数ペア:

[(1, 28980), (2, 14490), (3, 9660), (4, 7245), (5, 5796), (6, 4830), (7, 4140), (9, 3220), (10, 2898), (12, 2415), (14, 2070), (15, 1932), (18, 1610), (20, 1449), (21, 1380), (23, 1260), (28, 1035), (30, 966), (35, 828), (36, 805), (42, 690), (45, 644), (46, 630), (60, 483), (63, 460), (69, 420), (70, 414), (84, 345), (90, 322), (92, 315), (105, 276), (115, 252), (126, 230), (138, 210), (140, 207), (161, 180)]