42780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:66

約数の個数: 48

約数和(自身を含む): 129024

約数和(自身を除く): 86244

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 31, 46, 60, 62, 69, 92, 93, 115, 124, 138, 155, 186, 230, 276, 310, 345, 372, 460, 465, 620, 690, 713, 930, 1380, 1426, 1860, 2139, 2852, 3565, 4278, 7130, 8556, 10695, 14260, 21390, 42780]

約数ペア:

[(1, 42780), (2, 21390), (3, 14260), (4, 10695), (5, 8556), (6, 7130), (10, 4278), (12, 3565), (15, 2852), (20, 2139), (23, 1860), (30, 1426), (31, 1380), (46, 930), (60, 713), (62, 690), (69, 620), (92, 465), (93, 460), (115, 372), (124, 345), (138, 310), (155, 276), (186, 230)]