21415520

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{19121}}^1$

素因数の和:19143

約数の個数: 48

約数和(自身を含む): 57824928

約数和(自身を除く): 36409408

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 19121, 38242, 76484, 95605, 133847, 152968, 191210, 267694, 305936, 382420, 535388, 611872, 669235, 764840, 1070776, 1338470, 1529680, 2141552, 2676940, 3059360, 4283104, 5353880, 10707760, 21415520]

約数ペア:

[(1, 21415520), (2, 10707760), (4, 5353880), (5, 4283104), (7, 3059360), (8, 2676940), (10, 2141552), (14, 1529680), (16, 1338470), (20, 1070776), (28, 764840), (32, 669235), (35, 611872), (40, 535388), (56, 382420), (70, 305936), (80, 267694), (112, 191210), (140, 152968), (160, 133847), (224, 95605), (280, 76484), (560, 38242), (1120, 19121)]