1980816180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{673747}}^1$

素因数の和:673773

約数の個数: 72

約数和(自身を含む): 6451810848

約数和(自身を除く): 4470994668

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 673747, 1347494, 2021241, 2694988, 3368735, 4042482, 4716229, 6737470, 8084964, 9432458, 10106205, 13474940, 14148687, 18864916, 20212410, 23581145, 28297374, 33013603, 40424820, 47162290, 56594748, 66027206, 70743435, 94324580, 99040809, 132054412, 141486870, 165068015, 198081618, 282973740, 330136030, 396163236, 495204045, 660272060, 990408090, 1980816180]

約数ペア:

[(1, 1980816180), (2, 990408090), (3, 660272060), (4, 495204045), (5, 396163236), (6, 330136030), (7, 282973740), (10, 198081618), (12, 165068015), (14, 141486870), (15, 132054412), (20, 99040809), (21, 94324580), (28, 70743435), (30, 66027206), (35, 56594748), (42, 47162290), (49, 40424820), (60, 33013603), (70, 28297374), (84, 23581145), (98, 20212410), (105, 18864916), (140, 14148687), (147, 13474940), (196, 10106205), (210, 9432458), (245, 8084964), (294, 6737470), (420, 4716229), (490, 4042482), (588, 3368735), (735, 2694988), (980, 2021241), (1470, 1347494), (2940, 673747)]