278040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{331}}^1$

素因数の和:352

約数の個数: 64

約数和(自身を含む): 956160

約数和(自身を除く): 678120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 331, 420, 662, 840, 993, 1324, 1655, 1986, 2317, 2648, 3310, 3972, 4634, 4965, 6620, 6951, 7944, 9268, 9930, 11585, 13240, 13902, 18536, 19860, 23170, 27804, 34755, 39720, 46340, 55608, 69510, 92680, 139020, 278040]

約数ペア:

[(1, 278040), (2, 139020), (3, 92680), (4, 69510), (5, 55608), (6, 46340), (7, 39720), (8, 34755), (10, 27804), (12, 23170), (14, 19860), (15, 18536), (20, 13902), (21, 13240), (24, 11585), (28, 9930), (30, 9268), (35, 7944), (40, 6951), (42, 6620), (56, 4965), (60, 4634), (70, 3972), (84, 3310), (105, 2648), (120, 2317), (140, 1986), (168, 1655), (210, 1324), (280, 993), (331, 840), (420, 662)]