201421720

素因数分解:

$2^3\times 5^1\times {\mathrm{5035543}}^1$

素因数の和:5035554

約数の個数: 16

約数和(自身を含む): 453198960

約数和(自身を除く): 251777240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5035543, 10071086, 20142172, 25177715, 40284344, 50355430, 100710860, 201421720]

約数ペア:

[(1, 201421720), (2, 100710860), (4, 50355430), (5, 40284344), (8, 25177715), (10, 20142172), (20, 10071086), (40, 5035543)]