20709890

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{709}}^1$

素因数の和:866

約数の個数: 32

約数和(自身を含む): 39260160

約数和(自身を除く): 18550270

約数列:

[1, 2, 5, 10, 23, 46, 115, 127, 230, 254, 635, 709, 1270, 1418, 2921, 3545, 5842, 7090, 14605, 16307, 29210, 32614, 81535, 90043, 163070, 180086, 450215, 900430, 2070989, 4141978, 10354945, 20709890]

約数ペア:

[(1, 20709890), (2, 10354945), (5, 4141978), (10, 2070989), (23, 900430), (46, 450215), (115, 180086), (127, 163070), (230, 90043), (254, 81535), (635, 32614), (709, 29210), (1270, 16307), (1418, 14605), (2921, 7090), (3545, 5842)]