21198135

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{151}}^1\times {\mathrm{191}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 39923712

約数和(自身を除く): 18725577

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 151, 191, 245, 453, 573, 735, 755, 955, 1057, 1337, 2265, 2865, 3171, 4011, 5285, 6685, 7399, 9359, 15855, 20055, 22197, 28077, 28841, 36995, 46795, 86523, 110985, 140385, 144205, 201887, 432615, 605661, 1009435, 1413209, 3028305, 4239627, 7066045, 21198135]

約数ペア:

[(1, 21198135), (3, 7066045), (5, 4239627), (7, 3028305), (15, 1413209), (21, 1009435), (35, 605661), (49, 432615), (105, 201887), (147, 144205), (151, 140385), (191, 110985), (245, 86523), (453, 46795), (573, 36995), (735, 28841), (755, 28077), (955, 22197), (1057, 20055), (1337, 15855), (2265, 9359), (2865, 7399), (3171, 6685), (4011, 5285)]