21604980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5903}}^1$

素因数の和:5976

約数の個数: 48

約数和(自身を含む): 61496064

約数和(自身を除く): 39891084

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 122, 183, 244, 305, 366, 610, 732, 915, 1220, 1830, 3660, 5903, 11806, 17709, 23612, 29515, 35418, 59030, 70836, 88545, 118060, 177090, 354180, 360083, 720166, 1080249, 1440332, 1800415, 2160498, 3600830, 4320996, 5401245, 7201660, 10802490, 21604980]

約数ペア:

[(1, 21604980), (2, 10802490), (3, 7201660), (4, 5401245), (5, 4320996), (6, 3600830), (10, 2160498), (12, 1800415), (15, 1440332), (20, 1080249), (30, 720166), (60, 360083), (61, 354180), (122, 177090), (183, 118060), (244, 88545), (305, 70836), (366, 59030), (610, 35418), (732, 29515), (915, 23612), (1220, 17709), (1830, 11806), (3660, 5903)]