20453992

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{503}}^1$

素因数の和:562

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 25268888

約数列:

[1, 2, 4, 8, 13, 17, 23, 26, 34, 46, 52, 68, 92, 104, 136, 184, 221, 299, 391, 442, 503, 598, 782, 884, 1006, 1196, 1564, 1768, 2012, 2392, 3128, 4024, 5083, 6539, 8551, 10166, 11569, 13078, 17102, 20332, 23138, 26156, 34204, 40664, 46276, 52312, 68408, 92552, 111163, 150397, 196673, 222326, 300794, 393346, 444652, 601588, 786692, 889304, 1203176, 1573384, 2556749, 5113498, 10226996, 20453992]

約数ペア:

[(1, 20453992), (2, 10226996), (4, 5113498), (8, 2556749), (13, 1573384), (17, 1203176), (23, 889304), (26, 786692), (34, 601588), (46, 444652), (52, 393346), (68, 300794), (92, 222326), (104, 196673), (136, 150397), (184, 111163), (221, 92552), (299, 68408), (391, 52312), (442, 46276), (503, 40664), (598, 34204), (782, 26156), (884, 23138), (1006, 20332), (1196, 17102), (1564, 13078), (1768, 11569), (2012, 10166), (2392, 8551), (3128, 6539), (4024, 5083)]