21545248

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{587}}^1$

素因数の和:665

約数の個数: 48

約数和(自身を含む): 45045504

約数和(自身を除く): 23500256

約数列:

[1, 2, 4, 8, 16, 31, 32, 37, 62, 74, 124, 148, 248, 296, 496, 587, 592, 992, 1147, 1174, 1184, 2294, 2348, 4588, 4696, 9176, 9392, 18197, 18352, 18784, 21719, 36394, 36704, 43438, 72788, 86876, 145576, 173752, 291152, 347504, 582304, 673289, 695008, 1346578, 2693156, 5386312, 10772624, 21545248]

約数ペア:

[(1, 21545248), (2, 10772624), (4, 5386312), (8, 2693156), (16, 1346578), (31, 695008), (32, 673289), (37, 582304), (62, 347504), (74, 291152), (124, 173752), (148, 145576), (248, 86876), (296, 72788), (496, 43438), (587, 36704), (592, 36394), (992, 21719), (1147, 18784), (1174, 18352), (1184, 18197), (2294, 9392), (2348, 9176), (4588, 4696)]