21905384

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:242

約数の個数: 64

約数和(自身を含む): 46656000

約数和(自身を除く): 24750616

約数列:

[1, 2, 4, 8, 17, 23, 34, 46, 47, 68, 92, 94, 136, 149, 184, 188, 298, 376, 391, 596, 782, 799, 1081, 1192, 1564, 1598, 2162, 2533, 3128, 3196, 3427, 4324, 5066, 6392, 6854, 7003, 8648, 10132, 13708, 14006, 18377, 20264, 27416, 28012, 36754, 56024, 58259, 73508, 116518, 119051, 147016, 161069, 233036, 238102, 322138, 466072, 476204, 644276, 952408, 1288552, 2738173, 5476346, 10952692, 21905384]

約数ペア:

[(1, 21905384), (2, 10952692), (4, 5476346), (8, 2738173), (17, 1288552), (23, 952408), (34, 644276), (46, 476204), (47, 466072), (68, 322138), (92, 238102), (94, 233036), (136, 161069), (149, 147016), (184, 119051), (188, 116518), (298, 73508), (376, 58259), (391, 56024), (596, 36754), (782, 28012), (799, 27416), (1081, 20264), (1192, 18377), (1564, 14006), (1598, 13708), (2162, 10132), (2533, 8648), (3128, 7003), (3196, 6854), (3427, 6392), (4324, 5066)]