21859712

素因数分解:

$2^7\times 7^1\times {\mathrm{31}}^1\times {\mathrm{787}}^1$

素因数の和:839

約数の個数: 64

約数和(自身を含む): 51440640

約数和(自身を除く): 29580928

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 128, 217, 224, 248, 434, 448, 496, 787, 868, 896, 992, 1574, 1736, 1984, 3148, 3472, 3968, 5509, 6296, 6944, 11018, 12592, 13888, 22036, 24397, 25184, 27776, 44072, 48794, 50368, 88144, 97588, 100736, 170779, 176288, 195176, 341558, 352576, 390352, 683116, 705152, 780704, 1366232, 1561408, 2732464, 3122816, 5464928, 10929856, 21859712]

約数ペア:

[(1, 21859712), (2, 10929856), (4, 5464928), (7, 3122816), (8, 2732464), (14, 1561408), (16, 1366232), (28, 780704), (31, 705152), (32, 683116), (56, 390352), (62, 352576), (64, 341558), (112, 195176), (124, 176288), (128, 170779), (217, 100736), (224, 97588), (248, 88144), (434, 50368), (448, 48794), (496, 44072), (787, 27776), (868, 25184), (896, 24397), (992, 22036), (1574, 13888), (1736, 12592), (1984, 11018), (3148, 6944), (3472, 6296), (3968, 5509)]