20338773

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{367}}^1$

素因数の和:426

約数の個数: 48

約数和(自身を含む): 35239680

約数和(自身を除く): 14900907

約数列:

[1, 3, 7, 13, 21, 29, 39, 49, 87, 91, 147, 203, 273, 367, 377, 609, 637, 1101, 1131, 1421, 1911, 2569, 2639, 4263, 4771, 7707, 7917, 10643, 14313, 17983, 18473, 31929, 33397, 53949, 55419, 74501, 100191, 138359, 223503, 233779, 415077, 521507, 701337, 968513, 1564521, 2905539, 6779591, 20338773]

約数ペア:

[(1, 20338773), (3, 6779591), (7, 2905539), (13, 1564521), (21, 968513), (29, 701337), (39, 521507), (49, 415077), (87, 233779), (91, 223503), (147, 138359), (203, 100191), (273, 74501), (367, 55419), (377, 53949), (609, 33397), (637, 31929), (1101, 18473), (1131, 17983), (1421, 14313), (1911, 10643), (2569, 7917), (2639, 7707), (4263, 4771)]