20407424

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:221

約数の個数: 64

約数和(自身を含む): 43411200

約数和(自身を除く): 23003776

約数列:

[1, 2, 4, 8, 16, 31, 32, 37, 62, 64, 74, 124, 128, 139, 148, 248, 278, 296, 496, 556, 592, 992, 1112, 1147, 1184, 1984, 2224, 2294, 2368, 3968, 4309, 4448, 4588, 4736, 5143, 8618, 8896, 9176, 10286, 17236, 17792, 18352, 20572, 34472, 36704, 41144, 68944, 73408, 82288, 137888, 146816, 159433, 164576, 275776, 318866, 329152, 551552, 637732, 658304, 1275464, 2550928, 5101856, 10203712, 20407424]

約数ペア:

[(1, 20407424), (2, 10203712), (4, 5101856), (8, 2550928), (16, 1275464), (31, 658304), (32, 637732), (37, 551552), (62, 329152), (64, 318866), (74, 275776), (124, 164576), (128, 159433), (139, 146816), (148, 137888), (248, 82288), (278, 73408), (296, 68944), (496, 41144), (556, 36704), (592, 34472), (992, 20572), (1112, 18352), (1147, 17792), (1184, 17236), (1984, 10286), (2224, 9176), (2294, 8896), (2368, 8618), (3968, 5143), (4309, 4736), (4448, 4588)]