259980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{619}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 833280

約数和(自身を除く): 573300

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 619, 1238, 1857, 2476, 3095, 3714, 4333, 6190, 7428, 8666, 9285, 12380, 12999, 17332, 18570, 21665, 25998, 37140, 43330, 51996, 64995, 86660, 129990, 259980]

約数ペア:

[(1, 259980), (2, 129990), (3, 86660), (4, 64995), (5, 51996), (6, 43330), (7, 37140), (10, 25998), (12, 21665), (14, 18570), (15, 17332), (20, 12999), (21, 12380), (28, 9285), (30, 8666), (35, 7428), (42, 6190), (60, 4333), (70, 3714), (84, 3095), (105, 2476), (140, 1857), (210, 1238), (420, 619)]