21405670

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{14969}}^1$

素因数の和:15000

約数の個数: 32

約数和(自身を含む): 45269280

約数和(自身を除く): 23863610

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 286, 715, 1430, 14969, 29938, 74845, 149690, 164659, 194597, 329318, 389194, 823295, 972985, 1646590, 1945970, 2140567, 4281134, 10702835, 21405670]

約数ペア:

[(1, 21405670), (2, 10702835), (5, 4281134), (10, 2140567), (11, 1945970), (13, 1646590), (22, 972985), (26, 823295), (55, 389194), (65, 329318), (110, 194597), (130, 164659), (143, 149690), (286, 74845), (715, 29938), (1430, 14969)]