19781760

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{10303}}^1$

素因数の和:10325

約数の個数: 64

約数和(自身を含む): 63060480

約数和(自身を除く): 43278720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 320, 384, 480, 640, 960, 1920, 10303, 20606, 30909, 41212, 51515, 61818, 82424, 103030, 123636, 154545, 164848, 206060, 247272, 309090, 329696, 412120, 494544, 618180, 659392, 824240, 989088, 1236360, 1318784, 1648480, 1978176, 2472720, 3296960, 3956352, 4945440, 6593920, 9890880, 19781760]

約数ペア:

[(1, 19781760), (2, 9890880), (3, 6593920), (4, 4945440), (5, 3956352), (6, 3296960), (8, 2472720), (10, 1978176), (12, 1648480), (15, 1318784), (16, 1236360), (20, 989088), (24, 824240), (30, 659392), (32, 618180), (40, 494544), (48, 412120), (60, 329696), (64, 309090), (80, 247272), (96, 206060), (120, 164848), (128, 154545), (160, 123636), (192, 103030), (240, 82424), (320, 61818), (384, 51515), (480, 41212), (640, 30909), (960, 20606), (1920, 10303)]